P720 User Guide

This is the short description for internal use.

P720 User Guide - Lenovo

Copyright Lenovo 2019, 2020. LIMITED AND RESTRICTED RIGHTS NOTICE

Sixth Edition (March 2021). © Copyright Lenovo 2019 ... Lenovo provides documentation with instructions when it is appropriate for customers to install options ...

P720 User Guide

User Guide for Lenovo models including: ThinkStation P720 Tower

PDF Viewing Options

Not Your Device? Search For Manuals or Datasheets below:


File Info : application/pdf, 178 Pages, 14.51MB

Document DEVICE REPORToriginal
P720 User Guide
Machine Types: 30BA, 30BB, and 30BU

Note: Before using this information and the product it supports, be sure to read and understand the "Read this first: Important safety information" on page iii and Appendix G "Notices" on page 161.
Fifth Edition (May 2020) © Copyright Lenovo 2019, 2020. LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant to a General Services Administration "GSA" contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS35F-05925.

Contents
Read this first: Important safety information . . . . . . . . . . . . . . . .iii
Before using this manual . . . . . . . . . . . . iii Service and upgrades . . . . . . . . . . . . . iii Static electricity prevention . . . . . . . . . . . iv Power cords and power adapters . . . . . . . . . iv Extension cords and related devices. . . . . . . . v Plugs and outlets . . . . . . . . . . . . . . . v External devices . . . . . . . . . . . . . . . v Heat and product ventilation . . . . . . . . . . . v Computer placement notices . . . . . . . . . . vi Operating environment . . . . . . . . . . . . . vi Laser compliance statement . . . . . . . . . . . vii Hazardous energy statement . . . . . . . . . . vii Lithium coin-cell battery notice . . . . . . . . . . vii Using earphones, headphones, or a headset . . . viii Cleaning and maintenance . . . . . . . . . . . ix
Chapter 1. Product overview . . . . . . 1
Hardware locations . . . . . . . . . . . . . . 1 Front view . . . . . . . . . . . . . . . . 2 Rear view . . . . . . . . . . . . . . . . 4 Computer components . . . . . . . . . . . 7 Parts on the system board . . . . . . . . . . 8 Internal storage drives . . . . . . . . . . 10 Machine type and model label . . . . . . . 12
Computer features. . . . . . . . . . . . . . 12 Computer specifications . . . . . . . . . . . 15 Programs . . . . . . . . . . . . . . . . . 16
Accessing a program on your computer . . . 16 An introduction to Lenovo programs . . . . . 16
Chapter 2. Using your computer . . . 19
Registering your computer . . . . . . . . . . 19 Setting the computer volume . . . . . . . . . 19 Using a disc . . . . . . . . . . . . . . . . 19
Guidelines about using the optical drive . . . 19 Handling and storing a disc . . . . . . . . 19 Playing and removing a disc . . . . . . . . 20 Recording a disc . . . . . . . . . . . . 20 Connecting to a network . . . . . . . . . . . 21
Chapter 3. You and your computer . . 23
Arranging your workspace . . . . . . . . . . 23 Glare and lighting . . . . . . . . . . . . 23 Air circulation . . . . . . . . . . . . . . 23 Electrical outlet locations and cable lengths . . 23

Comfort . . . . . . . . . . . . . . . . 23 Accessibility information . . . . . . . . . . . 24 Cleaning your computer . . . . . . . . . . . 27 Maintenance . . . . . . . . . . . . . . . . 27
Basic maintenance tips . . . . . . . . . . 27 Good maintenance practices . . . . . . . . 27 Keeping your computer current . . . . . . . 28 Moving your computer . . . . . . . . . . . . 28
Chapter 4. Security . . . . . . . . . . 29
Locking your computer . . . . . . . . . . . . 29 Locking the computer cover . . . . . . . . 29 Attaching a Kensington-style cable lock . . . 31
Viewing and changing security settings in the Setup Utility program . . . . . . . . . . . . 31 Using passwords and Windows accounts . . . . 31 Using fingerprint authentication . . . . . . . . 32 Using the cover presence switch . . . . . . . . 32 Using firewalls . . . . . . . . . . . . . . . 32 Protecting data against viruses . . . . . . . . . 33 Using the Smart USB Protection function . . . . . 33 Computrace Agent software embedded in firmware (for selected models) . . . . . . . . . 33 Trusted Platform Module (TPM). . . . . . . . . 33 Intel BIOS guard . . . . . . . . . . . . . . 33
Chapter 5. Advanced configuration . . . . . . . . . . . . . . 35
Using the Setup Utility program . . . . . . . . 35 Starting the Setup Utility program . . . . . . 35 Changing the display mode of the Setup Utility program . . . . . . . . . . . . . . . . 35 Changing the display language of the Setup Utility program . . . . . . . . . . . . . 35 Enabling or disabling a device . . . . . . . 36 Enabling or disabling the automatic power-on of your computer . . . . . . . . . . . . 36 Enabling or disabling the ErP LPS compliance mode . . . . . . . . . . . . . . . . . 36 Enabling or disabling the configuration change detection . . . . . . . . . . . . . . . 37 Changing the BIOS settings before installing a new operating system . . . . . . . . . . 37 Using BIOS passwords . . . . . . . . . . 37 Selecting a startup device . . . . . . . . . 39 Changing the fan speed level . . . . . . . . 40 Exiting the Setup Utility program . . . . . . 40
Updating and recovering the BIOS . . . . . . . 40 Configuring RAID . . . . . . . . . . . . . . 41
An Introduction to RAID . . . . . . . . . . 42

© Copyright Lenovo 2019, 2020

i

Configuring RAID with Intel RSTe . . . . . . 42 Configure RAID with AVAGO MegaRAID Configuration Utility . . . . . . . . . . . 44 Configuring RAID with Intel Virtual RAID on CPU . . . . . . . . . . . . . . . . . 46
Chapter 6. Troubleshooting, diagnostics, and recovery . . . . . . . 49
Basic procedure for resolving computer problems . . . . . . . . . . . . . . . . . 49 Troubleshooting . . . . . . . . . . . . . . 49
Startup problems . . . . . . . . . . . . 49 Audio problems . . . . . . . . . . . . . 50 CD or DVD problems . . . . . . . . . . . 51 Intermittent problems . . . . . . . . . . . 52 Storage drive problems . . . . . . . . . . 52 Ethernet LAN problems . . . . . . . . . . 52 Wireless LAN problem . . . . . . . . . . 53 Bluetooth problems . . . . . . . . . . . 54 Performance problems . . . . . . . . . . 54 Serial connector problem . . . . . . . . . 55 USB device problem . . . . . . . . . . . 56 Software and driver problems . . . . . . . 56 Diagnosing problems . . . . . . . . . . . . 56 Recovery information . . . . . . . . . . . . 58
Chapter 7. Hardware removal and installation . . . . . . . . . . . . . . . 59
Handling static-sensitive devices . . . . . . . . 59 Preparing your computer and removing the computer cover . . . . . . . . . . . . . . . 59 Removing and installing hardware . . . . . . . 60
External options . . . . . . . . . . . . . 60 Device in the flex bay . . . . . . . . . . . 61 Device in the multi-drive conversion kit . . . . 63 Flex-bay bracket . . . . . . . . . . . . 74 Cover presence switch . . . . . . . . . . 76 3.5-inch storage drive in the storage drive bay . . . . . . . . . . . . . . . . . . 78 2.5-inch storage drive in the storage drive bay . . . . . . . . . . . . . . . . . . 82 2.5-inch storage drive with a converter in the storage drive bay . . . . . . . . . . . . 87 M.2 solid-state drive . . . . . . . . . . . 95 Power supply assembly . . . . . . . . . . 108 PCIe card . . . . . . . . . . . . . . . 110 Full-length PCIe card . . . . . . . . . . . 116 Super capacitor module . . . . . . . . . . 119

Front fan assembly. . . . . . . . . . . . 121 Rear fan assembly . . . . . . . . . . . . 123 Memory module . . . . . . . . . . . . . 126 Coin-cell battery . . . . . . . . . . . . . 130 Wi-Fi units . . . . . . . . . . . . . . . 131 Completing the parts replacement . . . . . . . 137
Chapter 8. Getting information, help, and service . . . . . . . . . . . . . . .141
Information resources . . . . . . . . . . . . 141 Accessing the user guide in various languages . . . . . . . . . . . . . . . 141 Windows help system . . . . . . . . . . 141 Safety and warranty . . . . . . . . . . . 141 Lenovo Web site. . . . . . . . . . . . . 141 Lenovo Support Web site . . . . . . . . . 141 Frequently asked questions . . . . . . . . 142
Help and service . . . . . . . . . . . . . . 142 Calling for service . . . . . . . . . . . . 142 Using other services . . . . . . . . . . . 143 Purchasing additional services . . . . . . . 143
Appendix A. System memory speed. . . . . . . . . . . . . . . . . .145
Appendix B. Supplemental information about the Ubuntu operating system . . . . . . . . . . . . . . . . .147
Appendix C. Regulatory and TCO Certified information of countries and regions . . . . . . . . . . . . . . . . .149
Appendix D. WEEE and recycling information of countries and regions . . . . . . . . . . . . . . . . .153
Appendix E. Restriction of Hazardous Substances (RoHS) Directive of countries and regions . . . . . . . .157
Appendix F. ENERGY STAR model information . . . . . . . . . . . . . . .159
Appendix G. Notices. . . . . . . . . .161
Appendix H. Trademarks . . . . . . .163

ii P720 User Guide

Read this first: Important safety information
This chapter contains the safety information that you must be familiar with.
Before using this manual
CAUTION: Before using this manual, be sure to read and understand all the related safety information for this product. Refer to the information in this section and the safety information in the Safety, Warranty, and Setup Guide that you received with this product. Reading and understanding this safety information reduces the risk of personal injury and damage to your product.
If you no longer have a copy of the Safety, Warranty, and Setup Guide, you can obtain a Portable Document Format (PDF) version from the Lenovo Support Web site at https://support.lenovo.com. The Lenovo Support Web site also provides the Safety, Warranty, and Setup Guide and this User Guide in additional languages.
Service and upgrades
Do not attempt to service a product yourself unless instructed to do so by the Customer Support Center or your documentation. Only use a Service Provider who is approved to repair your particular product. Note: Some computer parts can be upgraded or replaced by the customer. Upgrades typically are referred to as options. Replacement parts approved for customer installation are referred to as Customer Replaceable Units, or CRUs. Lenovo provides documentation with instructions when it is appropriate for customers to install options or replace CRUs. You must closely follow all instructions when installing or replacing parts. The Off state of a power indicator does not necessarily mean that voltage levels inside a product are zero. Before you remove the covers from a product equipped with a power cord, always ensure that the power is turned off and that the product is unplugged from any power source. For more information about CRUs, refer to Chapter 7 "Hardware removal and installation" on page 59. If you have any questions or concerns, contact the Customer Support Center.
Although there are no moving parts in your computer after the power cord has been disconnected, the following warnings are required for your safety.
CAUTION:
Keep fingers and other parts of your body away from hazardous, moving parts. If you suffer an injury, seek medical care immediately.
CAUTION:
Avoid contact with hot components inside the computer. During operation, some components become hot enough to burn the skin. Before you open the computer cover, turn off the computer, disconnect power, and wait approximately 10 minutes for the components to cool.
CAUTION:
After replacing a CRU, reinstall all protective covers, including the computer cover, before connecting power and operating the computer. This action is important to help prevent unexpected electrical shock and help ensure the containment of an unexpected fire that could happen under extremely rare conditions.
CAUTION:

© Copyright Lenovo 2019, 2020

iii

When replacing CRUs, be cautious of sharp edges or corners that might cause injury. If you suffer an injury, seek medical care immediately.
Static electricity prevention
Static electricity, although harmless to you, can seriously damage computer components and options. Improper handling of static-sensitive parts can damage the part. When you unpack an option or CRU, do not open the static-protective package containing the part until the instructions direct you to install it.
When you handle options or CRUs, or perform any work inside the computer, take the following precautions to avoid static-electricity damage: · Limit your movement. Movement can cause static electricity to build up around you. · Always handle components carefully. Handle adapters, memory modules, and other circuit boards by the
edges. Never touch exposed circuitry. · Prevent others from touching components. · When you install a static-sensitive option or CRU, touch the static-protective package containing the part
to a metal expansion-slot cover or other unpainted metal surface on the computer for at least two seconds. This reduces static electricity in the package and your body. · When possible, remove the static-sensitive part from the static-protective packaging and install the part without setting it down. When this is not possible, place the static-protective packaging on a smooth, level surface and place the part on it. · Do not place the part on the computer cover or other metal surface.
Power cords and power adapters
Use only the power cords and power adapters supplied by the product manufacturer. Do not use the ac power cord for other devices.
The power cords shall be safety approved. For Germany, it shall be H05VV-F, 3G, 0.75 mm2, or better. For other countries, the suitable types shall be used accordingly.
Never wrap a power cord around a power adapter or other object. Doing so can stress the cord in ways that can cause the cord to fray, crack, or crimp. This can present a safety hazard.
Always route power cords so that they will not be walked on, tripped over, or pinched by objects.
Protect power cord and power adapters from liquids. For instance, do not leave your power cord or power adapter near sinks, tubs, toilets, or on floors that are cleaned with liquid cleansers. Liquids can cause a short circuit, particularly if the power cord or power adapter has been stressed by misuse. Liquids also can cause gradual corrosion of power cord terminals and/or the connector terminals on a power adapter, which can eventually result in overheating.
Ensure that all power cord connectors are securely and completely plugged into receptacles.
Do not use any power adapter that shows corrosion at the ac input pins or shows signs of overheating (such as deformed plastic) at the ac input or anywhere on the power adapter.
Do not use any power cords where the electrical contacts on either end show signs of corrosion or overheating or where the power cord appears to have been damaged in any way.
iv P720 User Guide

Extension cords and related devices
Ensure that extension cords, surge protectors, uninterruptible power supplies, and power strips that you use are rated to handle the electrical requirements of the product. Never overload these devices. If power strips are used, the load should not exceed the power strip input rating. Consult an electrician for more information if you have questions about power loads, power requirements, and input ratings.
Plugs and outlets

If a receptacle (power outlet) that you intend to use with your computer equipment appears to be damaged or corroded, do not use the outlet until it is replaced by a qualified electrician.
Do not bend or modify the plug. If the plug is damaged, contact the manufacturer to obtain a replacement.
Do not share an electrical outlet with other home or commercial appliances that draw large amounts of electricity. Otherwise, unstable voltage might damage your computer, data, or connected devices.
Some products are equipped with a three-pronged plug. This plug fits only into a grounded electrical outlet. This is a safety feature. Do not defeat this safety feature by trying to insert it into a non-grounded outlet. If you cannot insert the plug into the outlet, contact an electrician for an approved outlet adapter or to replace the outlet with one that enables this safety feature. Never overload an electrical outlet. The overall system load should not exceed 80 percent of the branch circuit rating. Consult an electrician for more information if you have questions about power loads and branch circuit ratings.
Be sure that the power outlet you are using is properly wired, easily accessible, and located close to the equipment. Do not fully extend power cords in a way that will stress the cords.
Be sure that the power outlet provides the correct voltage and current for the product you are installing.
Carefully connect and disconnect the equipment from the electrical outlet.
External devices
Do not connect or disconnect any external device cables other than Universal Serial Bus (USB) cables while the computer power is on; otherwise, you might damage your computer. To avoid possible damage to connected devices, wait at least five seconds after the computer is shut down to disconnect external devices.
Heat and product ventilation

Computers, power adapters, and many accessories can generate heat when turned on and when batteries are charging. Always follow these basic precautions:
· Do not leave your computer, power adapter, or accessories in contact with your lap or any part of your body for an extended period when the products are functioning or when the battery is charging. Your computer, power adapter, and many accessories produce some heat during normal operation. Extended contact with the body could cause discomfort or, potentially, a skin burn.

© Copyright Lenovo 2019, 2020

v

· Do not charge the battery or operate your computer, power adapter, or accessories near flammable materials or in explosive environments.
· Ventilation slots, fans, and heat sinks are provided with the product for safety, comfort, and reliable operation. These features might inadvertently become blocked by placing the product on a bed, sofa, carpet, or other flexible surface. Never block, cover, or disable these features.
Inspect your desktop computer for dust accumulation at least once every three months. Before inspecting your computer, turn off the power and unplug the computer's power cord from the electrical outlet; then remove any dust from vents and perforations in the bezel. If you notice external dust accumulation, then examine and remove dust from the inside of the computer including heat sink inlet fins, power supply vents, and fans. Always turn off and unplug the computer before opening the cover. If possible, avoid operating your computer within two feet of high-traffic areas. If you must operate your computer in or near a high-traffic area, inspect and, if necessary, clean your computer more frequently.
For your safety and to maintain optimum computer performance, always follow these basic precautions with your desktop computer: · Keep the cover closed whenever the computer is plugged in. · Regularly inspect the outside of the computer for dust accumulation. · Remove dust from vents and any perforations in the bezel. More frequent cleanings might be required for
computers in dusty or high-traffic areas. · Do not restrict or block any ventilation openings. · Do not store or operate your computer inside furniture, as this might increase the risk of overheating. · Airflow temperatures into the computer should not exceed 35°C (95°F). · Do not install air filtration devices. They may interfere with proper cooling.
Computer placement notices
Inappropriate computer placement might cause harm to children. · Place the computer on a sturdy piece of low-rise furniture or furniture that has been anchored. · Do not place the computer at the edge of the furniture. · Keep the computer cables out of the reach of children. · Some items, such as toys, might attract children. Keep such items away from the computer.
Supervise children in rooms where the above safety instructions cannot be fully implemented.
Operating environment
The optimal environment in which to use your computer is 10°C­35°C (50°F­95°F) with humidity ranging between 35% and 80%. If your computer is stored or transported in temperatures less than 10°C (50°F), allow the cold computer to rise slowly to an optimal operating temperature of 10°C­35°C (50°F­95°F) before use. This process could take two hours in extreme conditions. Failure to allow your computer to rise to an optimal operating temperature before use could result in irreparable damage to your computer.
If possible, place your computer in a well-ventilated and dry area without direct exposure to sunshine.
Keep electrical appliances such as an electric fan, radio, high-powered speakers, air conditioner, and microwave oven away from your computer because the strong magnetic fields generated by these appliances can damage the monitor and data on the storage drive.
vi P720 User Guide

Do not place any beverages on top of or beside the computer or other connected devices. If liquid is spilled on or in the computer or a connected device, a short circuit or other damage might occur. Do not eat or smoke over your keyboard. Particles that fall into your keyboard can cause damage.
Laser compliance statement
CAUTION:
When laser products (such as CD-ROMs, DVD drives, fiber optic devices, or transmitters) are installed, note the following: · Do not remove the covers. Removing the covers of the laser product could result in exposure to
hazardous laser radiation. There are no serviceable parts inside the device. · Use of controls or adjustments or performance of procedures other than those specified herein
might result in hazardous radiation exposure.
DANGER Some laser products contain an embedded Class 3A or Class 3B laser diode. Note the following: Laser radiation when open. Do not stare into the beam, do not view directly with optical instruments, and avoid direct exposure to the beam.
Hazardous energy statement
DANGER
Disconnect all power cords from electrical outlets before removing the computer cover or any part that has the above label attached.
DO NOT disassemble components that have the above label attached. There are no serviceable parts inside these components. Your product is designed for safe use. However, hazardous voltage, current, and energy levels are present inside any component that has this label attached. Disassembling of these components might cause fire or might even result in death. If you suspect a problem with one of these parts, contact a service technician.
Lithium coin-cell battery notice
DANGER Danger of explosion if battery is incorrectly replaced.

© Copyright Lenovo 2019, 2020

vii

When replacing the lithium coin-cell battery, use only the same type or equivalent type that is recommended by the manufacturer. The battery contains lithium and can explode if not properly used, handled, or disposed of. Swallowing the lithium coin-cell battery will cause chocking or severe internal burns in just two hours and might even result in death.
Keep batteries away from children. If the lithium coin-cell battery is swallowed or placed inside any part of the body, seek medical care immediately.
Do not: · Throw or immerse into water · Heat to more than 100 °C (212°F). · Repair or disassemble · Leave in an extremely low air pressure environment · Leave in an extremely high-temperature environment · Crush, puncture, cut, or incinerate
Dispose of the battery as required by local ordinances or regulations.
The following statement applies to users in the state of California, U.S.A. California Perchlorate Information: Products containing manganese dioxide lithium coin-cell batteries may contain perchlorate. Perchlorate Material - special handling may apply, see https://www.dtsc.ca.gov/hazardouswaste/ perchlorate/.
Using earphones, headphones, or a headset
· If your computer has both a headphone connector and an audio line-out connector, always use the headphone connector for earphones, headphones, or a headset. However, the headphone connector does not support the microphone of the headset.
· If your computer has both a headset connector and an audio line-out connector, always use the headset connector for earphones, headphones, or a headset.
CAUTION:
Excessive sound pressure from earphones and headphones can cause hearing loss. Adjustment of the equalizer to maximum increases the earphone and headphone output voltage and the sound pressure level. Therefore, to protect your hearing, adjust the equalizer to an appropriate level.
Excessive use of headphones or earphones for a long period of time at high volume can be dangerous if the output of the headphone or earphone connectors do not comply with specifications of EN 50332-2. The headphone output connector of your computer complies with EN 50332-2 Sub clause 7. This specification limits the computer's maximum wide band true RMS output voltage to 150 mV. To help protect against hearing loss, ensure that the headphones or earphones you use also comply with EN 50332-2 (Clause 7 Limits) or a wide band characteristic voltage of 75 mV. Using headphones that do not comply with EN 503322 can be dangerous due to excessive sound pressure levels.
If your Lenovo computer came with headphones or earphones in the package, as a set, the combination of the headphones or earphones and the computer already complies with the specifications of EN 50332-1. If different headphones or earphones are used, ensure that they comply with EN 50332-1 (Clause 6.5 Limitation Values). Using headphones that do not comply with EN 50332-1 can be dangerous due to excessive sound pressure levels.
viii P720 User Guide

Cleaning and maintenance
Keep your computer and workspace clean. Shut down the computer and then disconnect the power cord before cleaning the computer. Do not spray any liquid detergent directly on the computer or use any detergent containing flammable material to clean the computer. Spray the detergent on a soft cloth and then wipe the computer surfaces.

© Copyright Lenovo 2019, 2020

ix

x P720 User Guide

Chapter 1. Product overview
This chapter provides basic information to help you get familiar with your computer.
Hardware locations
This section provides information about the locations of your computer hardware.

© Copyright Lenovo 2019, 2020

1

Front view
Note: The computer hardware might look slightly different from the illustration.

Figure 1. Front connectors, controls, and indicators

1 Optical-drive eject/close button (available on some models) 3 Power indicator 5 Signal diagnostic LED indicator 7 Photoelectric sensor 9 Always On USB 3.0 connector

2 Power button
4 Storage drive activity indicator 6 SD card slot 8 USB 3.0 connectors (3) 10 Headset connector

Note: The orientation of the ThinkStation® logo plate on the front of your computer is adjustable. When you lay the computer on its side, you can slightly pull out the logo plate. Turn it 90-degree counterclockwise, and then push it back in. 1 Optical-drive eject/close button (available on some models) Press the button to eject or close the tray of the optical drive.

2 P720 User Guide

2 Power button Press the power button to turn on your computer. If your computer is unresponsive, you can turn off the computer by pressing and holding the power button for four or more seconds. 3 Power indicator When the power indicator is on, the computer is turned on. 4 Storage drive activity indicator This indicator shows the status of the internal storage drives (such as hard disk drives or solid-state drives). On: The storage drives are active and data is being transferred. Off (when the computer is powered on): No data is being transferred or the storage drives are not in use. 5 Signal diagnostic LED indicator Off (when the computer is powered on): No error or issue is detected on your computer during normal operation. On: A catastrophic error is detected on your computer during normal operation. Blinking: An error or issue is detected on your computer during normal operation. 6 SD card slot Insert a secure digital (SD) card into the slot to access the data on the card. 7 Photoelectric sensor This sensor receives the flash light sent by the Lenovo PC Diagnostics application installed in the smartphone. Then, the photoelectric sensor triggers the computer to send the tune of the detected error to the smartphone for users to decode the error. 8 USB 3.0 connector (3) Use this connector to attach a USB-compatible device, such as a USB keyboard, mouse, storage drive, or printer. 9 Always On USB 3.0 connector Use this connector to attach a USB-compatible device, such as a USB keyboard, mouse, storage drive, or printer. With the power cord connected, you can charge the connected USB device even when the computer is in hibernation mode or turned off. If the Always On USB connector function is not enabled, open the Power Manager program and enable the function. To open the Power Manager program, see "Accessing a program on your computer" on page 16. To enable the Always On USB connector, refer to the help system of the Power Manager program. 10 Headset connector Use this connector to attach a headset to your computer.
Chapter 1. Product overview 3

Rear view
Some connectors on the rear of your computer are color-coded to help you determine where to connect the cables on your computer.
Note: The computer hardware might look slightly different from the illustration.

Figure 2. Rear view 1 Audio line-out connector 3 Optional serial connector 5 USB 2.0 connectors (2) 7 PCI/PCIe card area* 9 Security-lock slot 11 Ethernet connectors (2) 13 PS/2 mouse connector
4 P720 User Guide

2 Microphone connector 4 PS/2 keyboard connector 6 USB 3.0 connectors (4) 8 Power-cord connector 10 Key-nest slots 12 Padlock loop 14 Audio line-in connector

Notes: *A discrete graphics card or a network adapter can be installed in the appropriate Peripheral Component Interconnect (PCI)/PCI-Express (PCIe) card slot. If such a card is installed, use the connectors on the card instead of the corresponding connectors on the computer to optimize the performance. Depending on your computer model, the preinstalled cards might vary. One or more graphics cards might be installed to provide the following connectors: · Digital Visual Interface (DVI) connector · DisplayPort® connector · Mini DisplayPort® connector
DisplayPort connector Use this connector to attach a high-performance monitor, a direct-drive monitor, or other compatible devices.
DVI monitor connector Use this connector to attach a DVI monitor or other compatible devices.
Mini DisplayPort connector Use this connector to attach a high-performance monitor, a direct-drive monitor, or other compatible devices. The Mini DisplayPort connector is a miniaturized version of a DisplayPort connector. 1 Audio line-out connector The audio line-out connector is used to send audio signals from the computer to external devices, such as headphones. 2 Microphone connector Use this connector to attach a microphone to your computer when you want to record sound or if you use speech-recognition software. 3 Optional serial connector Use this connector to attach an external modem, a serial printer, or other devices that use a 9-pin serial connector. 4 PS/2 keyboard connector Use this connector to attach a Personal System/2 (PS/2) keyboard. 5 USB 2.0 connectors (2) Use this connector to attach a USB-compatible device, such as a USB keyboard, mouse, storage drive, or printer. 6 USB 3.0 connectors (4) Use this connector to attach a USB-compatible device, such as a USB keyboard, mouse, storage drive, or printer.
Chapter 1. Product overview 5

7 PCI/PCIe card area To further improve the computer performance, you can install PCI/PCIe cards into this area. Depending on your computer model, the pre-installed cards in this area might vary. 8 Power-cord connector Connect the power cord to your computer for power supply. 9 Security-lock slot Attach a Kensington-style cable lock to the security-lock slot to secure your computer. For more information, see "Attaching a Kensington-style cable lock" on page 31. 10 Key-nest slots Install the key holder that comes with the computer-cover-lock key to the key-nest slots. 11 Ethernet connectors (2) Connect an Ethernet cable for a local area network (LAN). Note: To operate the computer within Federal Communications Commission (FCC) Class B limits, use a Category 5 Ethernet cable. 12 Padlock loop Connect a padlock to secure your computer. For more information, see "Locking the computer cover" on page 29. 13 PS/2 mouse connector Use this connector to attach a PS/2 mouse, a trackball, or other pointing devices. 14 Audio line-in connector The audio line-in connector is used to receive audio signals from an external audio device, such as a stereo system. When you attach an external audio device, a cable connection is established between the audio lineout connector of the device and the audio line-in connector of the computer.
6 P720 User Guide

Computer components
Notes:
· Depending on the model, your computer might look slightly different from the illustration. · To remove the computer cover, see "Preparing your computer and removing the computer cover" on
page 59.

Figure 3. Component locations
1 Heat sink and fan assemblies* 3 Cover presence switch (also called intrusion switch) 5 Front fan assembly 7 Storage drives* 9 Power supply assembly 11 PCI/PCIe card*
*Configuration varies by computer models.

2 Memory modules* 4 Flex bays* 6 Storage drives or a storage drive bay cover* 8 M.2 solid-state drive holder 10 Memory air baffles 12 Rear fan assembly

Chapter 1. Product overview 7

Parts on the system board
Note: The system board might look slightly different from the illustration.

Figure 4. System board part locations
1 Front-audio connector 3 Memory fan connector 1 5 Microprocessor 2 memory slot 5 7 Microprocessor 2 memory slot 4 9 Microprocessor 2 memory slot 2 11 Microprocessor 1 memory slot 6 13 Microprocessor 1 memory slot 3 15 Microprocessor 1 memory slot 1 17 Cover presence switch connector (intrusion switch connector) 19 Microprocessor fan connector 1 21 M.2 solid-state drive slot 1 23 VROC header 25 4-pin power connector (for optical drive) 27 Optical-drive fan connector 1 29 Optical-drive fan connector 2

2 Internal-speaker connector 4 Microprocessor 2 memory slot 1 6 Microprocessor 2 memory slot 3 8 Microprocessor 2 memory slot 6 10 Microprocessor 1 memory slot 2 12 Microprocessor 1 memory slot 4 14 Microprocessor 1 memory slot 5 16 Thermal-sensor connector 18 Microprocessor 1
20 Blind connect assembly (BCA) 3 connector 22 M.2 solid-state drive slot 2 24 Trusted cryptography module (TCM) connector 26 Four-digit-diagnostics display connector 28 Front-fan-assembly connector 30 6-pin power connector 1 (for graphics card)

8 P720 User Guide

31 6-pin power connector 2 (for graphics card) 33 4-pin power connector (for storage drive) 35 Front panel connector 37 BCA 1 connector 39 ThunderboltTM control connector 41 Internal USB 2.0 connector 43 Front USB 3.0 connector 1 45 SATA 4 connector 47 SATA 2 connector 49 Power supply connector 51 eSATA/SATA connector 53 PCI card slot 5 55 Clear CMOS /Recovery jumper 57 PCIe 3.0 x16 card slot 2 59 Coin-cell battery 61 Microprocessor 2 (available on some models) 63 Serial port (COM1) connector

32 Internal-storage-drive activity indicator connector 34 4-pin power connector (for storage drive) 36 BCA 2 connector 38 SATA 6 connector 40 Front USB 3.0 connector 2 42 USB 3.0 extended connector 44 15-in-1 card reader connector 46 SATA 3 connector 48 SATA 1 connector 50 SATA 5 connector 52 PCIe 3.0 x4 card slot 6 54 PCIe 3.0 x16 card slot 4 56 PCIe 3.0 x8 card slot 3 58 PCIe 3.0 x16 card slot 1 60 Memory fan connector 2 62 Rear-fan-assembly connector 64 Microprocessor fan connector 2

Chapter 1. Product overview 9

Internal storage drives
Internal storage drives are devices that your computer uses to read and store data. You can add drives to your computer to increase storage capacity and enable your computer to read other types of media. Internal storage drives are installed in bays.
When you remove or install an internal storage drive, note the type and size of the drive that each bay supports and correctly connect the required cables. Refer to the appropriate section in Chapter 7 "Hardware removal and installation" on page 59 for instructions on how to remove or install internal storage drives for your computer.
The following illustration shows the locations of the storage drive bays.
Note: The computer hardware might look slightly different from the illustration.

Figure 5. Storage drive bay locations
1 Card reader (for an SD card) 3 Optional-storage-drive bays (2) 5 M.2 solid-state drive slots (2)

2 Flex bays (2) 4 Storage drive bays (2) 6 PCIe slots (5)

1 Card reader An SD card is installed in some models. 2 Flex bays (2) Depending on your computer model, the following devices might be installed in the flex bays:

10 P720 User Guide

· Flex module Depending on your computer model, the following parts might be installed in the flex module: ­ 15-in-1 card reader ­ External Serial Advanced Technology Attachment (eSATA) connector ­ Four-digit diagnostic display ­ Institute of Electrical and Electronics Engineers (IEEE) 1394 connector ­ Slim optical drive ­ Thunderbolt adapter kit
· Front-access storage enclosure · Multi-drive conversion kit
Depending on your computer model, the following parts might be installed in the multi-drive conversion kit: ­ Internal storage drive (such as hard disk drive, solid-state drive, or hybrid drive) ­ Slim optical drive · Optical drive · Slim-optical-drive adapter 3 Optional-storage-drive bays (2) You can install hard disk drives, solid-state drives, or hybrid drives in the storage drive bays. Note: If you want to install storage drives into the 3 optional-storage-drive bays, contact the Lenovo Customer Support Center for help. 4 Storage drive bays (2) You can install hard disk drives, solid-state drives, or hybrid drives in the storage drive bays. 5 M.2 solid-state drive slots (2) One or two M.2 solid-state drives are installed in some models. 6 PCIe slots (5) You can install compatible PCIe cards and PCIe solid-state drives in the PCIe card slots.
Chapter 1. Product overview 11

Machine type and model label
The machine type and model label identifies your computer. When you contact Lenovo for help, the machine type and model information helps support technicians to identify your computer and provide faster service. The following is a sample of the machine type and model label. Note: The computer hardware might look slightly different from the illustration.
Figure 6. Machine type and model label
Computer features
For your specific computer model, some features might vary or not apply. Information about your computer · To view basic information (such as microprocessor and memory information) about your computer, do the
following: 1. Click the Start button to open the Start menu. 2. Click Settings  System  About.
· To view detailed information about the devices (such as the optical drive and network adapters) on your computer, do the following: 1. Right-click the Start button to open the Start context menu. 2. Click Device Manager. 3. Locate and double-click your device in Device Manager to view device properties. Type the administrator password or provide confirmation if prompted.
12 P720 User Guide

Memory Up to 12 double data rate 4 (DDR4) error correction code (ECC) registered dual inline memory modules (RDIMMs)
Storage drives Your computer supports the following storage drives: · Hard disk drive · Hybrid drive (available on some models) · M.2 solid-state drive (available on some models) · Optical drive (available on some models) · SD card (available on some models) · Solid-state drive (available on some models)
To view the amount of storage drive space, do the following: 1. Right-click the Start button to open the Start context menu. 2. Click Disk Management and follow the instructions on the screen.
Video features · PCIe 3.0 x16 card slots on the system board for a discrete graphics card · Video connectors on a discrete graphics card:
­ DVI connector (available on some models) ­ DisplayPort connector (available on some models) ­ Mini DisplayPort connector (available on some models)
Audio features Integrated audio controller supports the following connectors and devices on your computer: · Audio line-in connector · Audio line-out connector · Headset connector · Internal speaker · Microphone connector
Input/Output (I/O) features · 100/1000 Mbps Ethernet connector · Audio connectors (audio line-in connector, audio line-out connector, microphone connector, and headset
connector) · Display connectors (DisplayPort connector, DVI connector, and Mini DisplayPort connector) (vary by
graphics card) · Optional 9-pin serial connector · PS/2 keyboard connector · PS/2 mouse connector · USB connectors · USB-C connector (available on some models)
Chapter 1. Product overview 13

Expansion · Flex bays · Storage drive bays · M.2 solid-state drive slots · Memory slots · One PCI card slot · One PCIe 3.0 x4 card slot · One PCIe 3.0 x8 card slot · Three PCIe 3.0 x16 card slots · SD card slot
Power supply Your computer comes with one of the following power supplies: · 690-watt automatic voltage-sensing power supply · 900-watt automatic voltage-sensing power supply
Wireless features Depending on your computer model, the following wireless features are supported: · Wireless LAN · Bluetooth
System management features · Ability to store power-on self-test (POST) hardware test results · Desktop Management Interface (DMI)
Desktop Management Interface provides a common path for users to access information about all aspects of a computer. The information includes the processor type, installation date, attached printers and other peripherals, power sources, and maintenance history. · ErP LPS compliance mode The energy-related products directive (ErP) lowest power state (LPS) compliance mode reduces the consumption of electricity when your computer is in sleep or off mode. For more information, see "Enabling or disabling the ErP LPS compliance mode" on page 36. · Intel® Standard Manageability (ISM) Intel Standard Manageability builds certain functionalities into computer hardware and firmware. Therefore, computers are less expensive for businesses and easier to monitor, maintain, update, upgrade, and repair. · Intel Active Management Technology (Intel AMT) With specific Intel platform capabilities and third-party management and security applications, Intel Active Management Technology enables IT administrators or managed service providers to easily and remotely discover, repair, and protect their networked computing assets. · Intel Rapid Storage Technology enterprise (Intel RSTe) The Intel RSTe configuration utility enables you to configure Redundant Array of Independent Disks (RAID) for computers with specific Intel chipset system boards. It supports RAID levels 0, 1, 5, and 10 on computers installed with Serial Advanced Technology Attachment (SATA) devices.
14 P720 User Guide

· Preboot Execution Environment (PXE) Preboot Execution Environment enables you to start computers using a network interface. This manner is independent of starting computers from data storage devices (such as the hard disk drive) or installed operating systems.
· System Management (SM) basic input/output system (BIOS) and SM software The SMBIOS specification defines data structures and access methods in a BIOS. Therefore, a user or an application can store and retrieve information specific about the computer in question.
· Wake on LAN (WOL) Wake on LAN is an Ethernet computer networking standard that allows a computer to be turned on or woken up by a network message. The message is usually sent by a program running on another computer on the same local area network.
· Windows Management Instrumentation (WMI) Windows Management Instrumentation is a set of extensions to the Windows Driver Model. It provides an operating system interface through which instrumented components provide information and notification.
Security features · Ability to enable and disable a device · Ability to enable and disable USB connectors individually · Antivirus program · BIOS passwords and Windows accounts to deter unauthorized use of your computer · Computrace Agent software embedded in firmware · Cover presence switch (also called intrusion switch) · Finger authentication (available on some models) · Firewalls · Intel BIOS guard · Smart USB Protection function · Startup sequence control · Startup without a keyboard or mouse · Support for a key lock on the computer cover (available on some models) · Support for a Kensington-style cable lock · Support for a padlock · Trusted Platform Module (TPM)
Preinstalled operating system Your computer is preinstalled with the Windows 10 operating system. Additional operating systems might be identified by Lenovo as compatible with your computer. To determine if an operating system has been certified or tested for compatibility, check the Web site of the operating system provider.
Computer specifications
This section lists the physical specifications for your computer.
Dimensions · Width: 175 mm (6.89 inches) · Height: 446 mm (17.56 inches)
Chapter 1. Product overview 15

· Depth: 485 mm (19.09 inches)
Weight Maximum configuration as shipped: 24 kg (52.91 lb)
Environment · Air temperature:
Operating: From 10°C (50°F) to 35°C (95°F) Storage in original shipping package: From -40°C (-40°F) to 60°C (140°F) Storage without package: From -10°C (14°F) to 60°C (140°F) · Humidity: Operating: 10%­80% (non-condensing) Storage: 10%­90% (non-condensing) · Altitude: Operating: From -15.2 m (-50 ft) to 3048 m (10 000 ft) Storage: From -15.2 m (-50 ft) to 10 668 m (35 000 ft)
Electrical input · Input voltage: From 100 V ac to 240 V ac · Input frequency: 50/60 Hz
Programs
This section provides information about the programs on your computer.
Accessing a program on your computer
To access a program on your computer, do one of the following: · From Windows Search:
1. Type the program name into the search box next to the Start button. 2. In the search results, click the name of the desired program to launch the program. · From the Start menu or Control Panel: 1. Click the Start button to open the Start menu. Then, click the name of the desired program to launch
the program. 2. If the program name is not displayed on the Start menu, access the program from Control Panel.
a. Click the Start button to open the Start menu. b. Click Windows System  Control Panel. c. View Control Panel by Large icons or Small icons, and then click the name of the desired program
to launch the program.
An introduction to Lenovo programs
This section provides information about the major Lenovo programs available on your operating system.
Note: Depending on your computer model, some of the following programs might not be available.
16 P720 User Guide

· Lenovo Vantage Your computer's best features and capabilities should be easy to access and understand. With Lenovo Vantage, they are. Use Lenovo Vantage to do the following: ­ Know the device status easily and customize device settings. ­ Download and install UEFI BIOS, firmware, and driver updates to keep your computer up-to-date. ­ Monitor your computer health, and secure your computer against outside threats. ­ Look up warranty status (online). ­ Access User Guide and helpful articles. Notes: ­ The available features vary depending on the computer model. ­ Lenovo Vantage makes periodic updates of the features to keep improving your experience with your computer. The description of features might be different from that on your actual user interface.
· ThinkStation Diagnostics The ThinkStation Diagnostics program enables you to troubleshoot and resolve computer problems. The program notifies you of any issues detected by the real-time hardware diagnostic monitoring function. The program also provides the details of the issue, analyzes possible causes, and provides solutions.
Chapter 1. Product overview 17

18 P720 User Guide

Chapter 2. Using your computer
This chapter provides information to help you use the various features provided by your computer.
Registering your computer
When you register your computer with Lenovo, you enter required information into a Lenovo database. The information enables Lenovo to contact you when there is a recall or other severe problem and provide quicker service when you call Lenovo for help. In addition, some locations offer extended privileges and services to registered users.
To register your computer with Lenovo, go to https://support.lenovo.com/productregistration and follow the instructions on the screen.
Setting the computer volume
To set the computer volume, do the following: 1. Click the volume icon in the Windows notification area on the taskbar.
Note: If the volume icon is not displayed in the Windows notification area, add the icon to the notification area. See the Windows help system. 2. Follow the instructions on the screen and the hover text to adjust the volume, mute the speaker, or unmute the speaker.
Using a disc
This section provides instructions on how to use a disc and the optical drive.
Guidelines about using the optical drive
When using the optical drive, follow these guidelines: · Do not place the computer in a location where the drive is exposed to any of the following conditions:
­ High temperature ­ High humidity ­ Excessive dust ­ Excessive vibration or sudden shock ­ An inclined surface ­ Direct sunlight · Do not insert any object other than a disc into the drive. · Do not insert damaged discs into the drive. Warped, scratched, or dirty discs can damage the drive. · Before moving the computer, remove the disc from the drive.
Handling and storing a disc
When handling and storing a disc, follow these guidelines: · Hold the disc by its edges. Do not touch the surface of the side that is not labeled.

© Copyright Lenovo 2019, 2020

19

· To remove dust or fingerprints, wipe the disc with a clean, soft cloth from the center to the outside. Wiping the disc in a circular direction might cause loss of data.
· Do not write or stick paper on the disc. · Do not scratch or mark the disc. · Do not place or store the disc in direct sunlight. · Do not use benzene, thinners, or other cleaners to clean the disc. · Do not drop or bend the disc.
Playing and removing a disc
To play a disc, do the following: 1. With the computer on, press the eject/close button on the front of the optical drive. The tray slides out of the drive. 2. Insert a disc into the tray. Some optical drive has a snap hub in the center of the tray. If your drive has a snap hub, support the tray with one hand and then push the center of the disc until it snaps into place. 3. Press the eject/close button again or gently push the tray forward to close the tray. The disc player program starts automatically. For more information, refer to the help system of the disc player program.
To remove a disc from the optical drive, do the following: 1. With the computer on, press the eject/close button on the front of the optical drive. The tray slides out of the drive. 2. Carefully remove the disc from the tray. 3. Press the eject/close button again or gently push the tray forward to close the tray.
Note: If the tray does not slide out of the drive when you press the eject/close button, turn off your computer. Then, insert a straightened paper clip into the emergency-eject hole adjacent to the eject/close button. Use the emergency eject only in an emergency.
Recording a disc
If your optical drive supports recording, you can record a disc.
Recording a disc using Windows tools To record a disc using Windows tools, do one of the following: · Burn a disc using the AutoPlay window.
1. Ensure that the disc is played automatically. a. Click the Start button to open the Start menu. b. Click Settings  Devices  AutoPlay. c. Select or turn on Use AutoPlay for all media and devices.
2. Insert a recordable disc into the optical drive that supports recording. The AutoPlay window opens. 3. Follow the instructions on the screen. · Burn a disc using Windows Media® Player. 1. Insert a recordable disc into the optical drive that supports recording. 2. Open Windows Media Player. See "Accessing a program on your computer" on page 16. 3. Follow the instructions on the screen. · Burn a disc from an ISO file.
20 P720 User Guide

1. Insert a recordable disc into the optical drive that supports recording. 2. Double-click the ISO file. 3. Follow the instructions on the screen.
Recording a disc using preinstalled programs To record a disc using preinstalled programs, do the following:
1. Insert a recordable disc into the optical drive that supports recording. 2. Open the PowerDVD Create, PowerProducer, or Power2Go program. See "Accessing a program on
your computer" on page 16. 3. Follow the instructions on the screen.
Connecting to a network
This section provides instructions on how to connect to a network.
Connecting to an Ethernet LAN You can connect your computer to an Ethernet LAN by connecting an Ethernet cable to the Ethernet connector.
DANGER
To avoid the risk of electrical shock, do not connect the telephone cable to the Ethernet connector.
Connecting to a wireless LAN You can connect your computer to a wireless LAN without the use of an Ethernet cable but by means of radio waves only.
Note: The wireless LAN feature is available only on some models.
To establish a wireless-LAN connection, do the following: 1. Ensure that a wireless LAN is available and the wireless LAN feature on your computer is working. 2. Click the wireless-network-connection-status icon in the Windows notification area to display available wireless networks.
Note: If the wireless-network-connection-status icon is not displayed in the Windows notification area, add the icon to the notification area. See the Windows help system. 3. Click a wireless LAN, and then click Connect to connect your computer to it. Provide required information if needed.
Connecting to a Bluetooth-enabled device Bluetooth is a short-range wireless communications technology. Use Bluetooth to establish a wireless connection between your computer and another Bluetooth-enabled device within a distance of about 10 m (32.8 ft).
Note: The Bluetooth feature is available only on some models.
To connect to a Bluetooth-enabled device, do the following: 1. Turn on the Bluetooth feature of your computer. Ensure that the Bluetooth-enabled device is located within a distance of about 10 m (32.8 ft) from your computer.
Chapter 2. Using your computer 21

2. Click the Bluetooth icon in the Windows notification area on the taskbar. Then, click Add a Device and follow the instructions on the screen. Note: If the Bluetooth icon is not displayed in the Windows notification area, add the icon to the notification area. See the Windows help system.
22 P720 User Guide

Chapter 3. You and your computer
This chapter provides information about accessibility, ergonomic, and cleaning and maintenance.
Arranging your workspace
Arrange your workspace to suit your needs and the kind of work you do. This section provides information about the factors that affect the way you arrange your workspace.
Glare and lighting
Position the monitor to minimize glare and reflections from overhead lights, windows, and other light sources. Reflected light from shiny surfaces can cause annoying reflections on your screen. When possible, place the monitor at right angles to windows and other light sources. If necessary, reduce overhead lighting by turning off lights or using lower wattage bulbs. If you install the monitor near a window, use curtains or blinds to block the sunlight. You can adjust the brightness and contrast controls on the monitor as the room lighting changes throughout the day.
Where it is impossible to avoid reflections or to adjust the lighting, an antiglare filter placed over the screen might be helpful. However, these filters might affect the clarity of the image on the screen; try them only after you have exhausted other methods of reducing glare.
Air circulation
Your computer produces heat. The computer has a fan that pulls in fresh air and forces out hot air through the air vents. Blocking the air vents can cause overheating, which might result in a malfunction or damage. Position the computer so that nothing blocks the air vents; usually, 51 mm (2 inches) of air space is sufficient. Ensure that the vented air is not blowing on people.
Electrical outlet locations and cable lengths
The following factors might determine the final placement of your computer: · Locations of electrical outlets · Length of power cords or power adapters · Length of the cables that are connected to other devices
For more information about power cords or power adapters, see "Power cords and power adapters" on page iv.
Comfort
Although no single working position is ideal for everyone, here are a few guidelines to help you find a position that suits you best. The following figure sets an example for your reference.

© Copyright Lenovo 2019, 2020

23

· Screen position: Keep the screen at a comfortable viewing distance, usually 51­61 cm (20­24 inches). Then, adjust the screen so that the top of the screen is at or slightly below eye level and you can view it without twisting your body.
· Chair position: Use a chair that gives you good back support and seat height adjustment. Use chair adjustments to best suit your desired posture.
· Head position: Keep your head and neck in a comfortable and neutral (vertical or upright) position. · Arm and hand positions: Keep your forearms, wrists, and hands in a relaxed and neutral (horizontal)
position. Type with a soft touch without pounding the keys. · Leg position: Keep your thighs parallel to the floor and your feet flat on the floor or on a footrest.
Make minor modifications in your working posture to deter the onset of discomfort caused by long periods of working in the same position. Frequent short breaks from your work also help to prevent minor discomfort associated with your working posture.
Accessibility information
Lenovo is committed to providing users who have hearing, vision, and mobility limitations with greater access to information and technology. This section provides information about the ways these users can get the most out of their computer experience. You also can get the most up-to-date accessibility information from the following Web site: https://www.lenovo.com/accessibility
Keyboard shortcuts The following list contains keyboard shortcuts that can help make your computer easier to use.
Note: Depending on your keyboard, some of the following keyboard shortcuts might not be available. · Windows logo key + U: Open Ease of Access Center · Right Shift for eight seconds: Turn on or turn off Filter Keys · Shift five times: Turn on or turn off Sticky Keys · Num Lock for five seconds: Turn on or turn off Toggle Keys · Left Alt+Left Shift+Num Lock: Turn on or turn off Mouse Keys · Left Alt+Left Shift+PrtScn (or PrtSc): Turn on or turn off High Contrast
For more information, go to https://windows.microsoft.com/, and then search using any of the following keywords: keyboard shortcuts, key combinations, shortcut keys.
Ease of Access Center Ease of Access Center on the Windows operating system enables you to configure your computer to suit your physical and cognitive needs.
24 P720 User Guide

To use Ease of Access Center, do the following: 1. Click the Start button to open the Start menu. 2. Click Settings  Ease of Access. 3. Choose the appropriate tool by following the instructions on the screen.
Ease of Access Center mainly includes the following tools: · Magnifier
Magnifier is a useful utility that enlarges the entire screen or part of the screen so that you can see the items better. · Narrator Narrator is a screen reader that reads aloud what is displayed on the screen and describes events such as error messages. · On-Screen Keyboard To input data into your computer using a mouse, joystick, or other pointing devices instead of a physical keyboard, you can use On-Screen Keyboard. · High Contrast High Contrast is a feature that heightens the color contrast of some text and images on your screen. As a result, those items are more distinct and easier to identify. · Personalized keyboard Adjust keyboard settings to make your keyboard easier to use. For example, you can use your keyboard to control the pointer and type certain key combinations easier. · Personalized mouse Adjust mouse settings to make your mouse easier to use. For example, you can change the pointer appearance and make it easier to manage windows with the mouse.
Speech Recognition Speech Recognition enables you to control your computer by voice.
Using only your voice, you can start programs, open menus, click objects on the screen, dictate text into documents, and write and send e-mails. Everything you do with the keyboard and mouse can be done with only your voice.
To use Speech Recognition, do the following: 1. Click the Start button to open the Start menu. 2. Click Windows System  Control Panel. 3. View Control Panel by Large icons or Small icons, and then click Speech Recognition. 4. Follow the instructions on the screen.
Screen-reader technologies Screen-reader technologies are primarily focused on software program interfaces, help information systems, and various online documents. For additional information about screen readers, see the following: · Using PDFs with screen readers:
https://www.adobe.com/accessibility.html?promoid=DJGVE · Using the JAWS screen reader:
https://www.freedomscientific.com/Products/Blindness/JAWS · Using the NVDA screen reader:
Chapter 3. You and your computer 25

https://www.nvaccess.org/
Screen resolution You can make the text and images on your screen easier to read by adjusting the screen resolution of your computer.
To adjust the screen resolution, do the following: 1. Right-click a blank area on the desktop. 2. Click Display settings  Display. 3. Follow the instructions on the screen.
Note: Setting the resolution too low might prevent some items from fitting on the screen.
Customizable item size You can make the items on your screen easier to read by changing the item size. · To change the item size temporarily, use the Magnifier tool in Ease of Access Center. · To change the item size permanently, do the following:
­ Change the size of all the items on your screen. Do the following: 1. Right-click a blank area on the desktop. 2. Click Display settings  Display. 3. Follow the on-screen instructions to change the item size. For some applications, your configuration might not take effect until you sign out and then sign in again.
­ Change the size of the items on a Web page. Press and hold Ctrl, and then press the plus-sign key (+) to enlarge or the minus-sign key (-) to reduce the text size.
­ Change the size of the items on the desktop or a window.
Note: This function might not work on some windows. If your mouse has a wheel, press and hold Ctrl, and then scroll the wheel to change the item size.
Industry-standard connectors Your computer provides industry-standard connectors that enable you to connect assistive devices.
For more information about the location and function of each connector, see "Hardware locations" on page 1.
TTY/TDD conversion modem Your computer supports the use of a text telephone (TTY) or the telecommunications device for the deaf (TDD) conversion modem. The modem must be connected between your computer and a TTY/TDD telephone. Then, you can type a message on your computer and send it to the telephone.
Documentation in accessible formats Lenovo provides electronic documentation in accessible formats, such as properly tagged PDF files or HyperText Markup Language (HTML) files. Lenovo electronic documentation is developed to ensure that visually impaired users can read the documentation through a screen reader. Each image in the documentation also includes adequate alternative text so that visually impaired users can understand the image when they use a screen reader.
26 P720 User Guide

Cleaning your computer
Attention: Do not open your computer or attempt any repair before reading and understanding the "Read this first: Important safety information" on page iii. Properly remove or install your computer cover. See Chapter 7 "Hardware removal and installation" on page 59.
CAUTION: Remove any media from the drives and turn off all connected devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer.
It is a good practice to clean your computer periodically to protect the surfaces and ensure trouble-free operation. Use only mild cleaning solutions and a damp cloth to clean the painted surfaces of the computer.
Dust buildup compounds problems associated with glare, so remember to clean the screen periodically. Wipe the screen surface gently with a soft, dry cloth, or blow on the screen to remove grit and other loose particles. Depending on the type of the screen, moisten a soft, lint-free cloth with an LCD cleaner or liquid glass cleaner and then wipe the screen surface.
Maintenance
With appropriate care and maintenance, your computer will serve you reliably. This section provides instructions on how to maintain your computer so that it can keep working in better condition.
Basic maintenance tips
Here are some basic points about keeping your computer functioning properly: · Keep your computer in a clean, dry environment. Ensure that the computer rests on a flat, steady surface. · Do not cover any of air vents. These air vents provide airflow to keep your computer from overheating. · Keep food and drinks away from all parts of your computer. Food particles and spills might make the
keyboard and mouse stick and unusable. · Do not get the power switches or other controls wet. Moisture can damage these parts and cause an
electrical hazard. · Always disconnect a power cord by grasping the plug instead of the cord.
Good maintenance practices
By performing a few good maintenance practices, you can maintain good computer performance, protect your data, and be prepared in case of a computer failure. · Empty your recycle bin on a regular basis. · Use the disk defragmentation or disk optimization feature of your operating system occasionally to
prevent performance problems caused by an excessive number of fragmented files. · Clean out your Inbox, Sent Items, and Deleted Items folders in your e-mail application on a regular basis. · Back up critical data regularly on removable media memory, such as discs and USB storage devices, and
store the removable media in a safe location. The frequency of making backup copies depends on how critical the data is to you or your business. · Back up your data on the storage drive regularly. See "Recovery information" on page 58. · Keep your computer software, device drivers, and operating system up-to-date. See "Keeping your computer current" on page 28.
Chapter 3. You and your computer 27

· Keep a log book. Entries might include major software or hardware changes, device-driver updates, intermittent problems and what you did to resolve them, and other issues you might have experienced. The cause of a problem might be change in hardware, change in software, or any other actions that might have taken place. A log book can help you or a Lenovo technician determines the cause of a problem.
· Create Product Recovery discs. See "Recovery information" on page 58 for more information about using Product Recovery discs to restore the hard disk drive to the factory-default settings.
Keeping your computer current
In most cases, it is a good practice to have the most up-to-date operating system update patches, software programs, and device drivers. This section provides instructions on how to get the latest updates for your computer.
Getting the latest system updates To get the latest system updates for your computer, ensure that your computer is connected to the Internet and do one of the following: · Open Lenovo Vantage to check the available update packages. If the latest update package is available,
follow the on-screen instructions to download and install the package. To open the Lenovo Vantage program, see "Accessing a program on your computer" on page 16. · Use Windows Update to get the system updates, such as security fixes, new versions of Windows components, and device driver updates.
1. Click the Start button to open the Start menu. 2. Click Settings  Update & Security  Windows Update. 3. Follow the instructions on the screen.
Note: The device drivers provided by Windows Update might not be tested by Lenovo. It is recommended that you get device drivers by using Lenovo programs or from the Lenovo Web site at https:// support.lenovo.com.
Moving your computer
Before moving your computer, take the following precautions: 1. Back up your data on the storage drive. See "Good maintenance practices" on page 27. 2. Remove any media from the drives and turn off all connected devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer. 3. If you saved the original shipping cartons and packing materials, use them to pack the units. If you are using different cartons, cushion the units to avoid damage.
Moving your computer to another country or region When you move your computer to another country or region, you must take local electrical standards into consideration. If the local electrical outlet style is different from the type you are using, use either an electrical plug adapter or a new power cord. To purchase such items, contact the Lenovo Customer Support Center. For a list of Lenovo Support phone numbers, go to https://pcsupport.lenovo.com/supportphonelist. If you cannot find the support telephone number for your country or region, contact your Lenovo reseller.
28 P720 User Guide

Chapter 4. Security
This chapter provides information about how to protect your computer from unauthorized use.
Locking your computer
This section provides instructions on how to lock your computer with the locking devices to keep your computer safe.
Locking the computer cover
Locking the computer cover helps prevent unauthorized people from gaining access to the inside of your computer. Your computer comes with a padlock loop and might also come with a key lock that is built into the computer cover. The keys for the key lock are attached to the rear of the machine. For security, store the keys in a secure place when you are not using them. Lenovo does not provide spare keys in case of any loss of keys.
Note: The key lock and keys are available only on some models.

Figure 7. Padlock

© Copyright Lenovo 2019, 2020

29

Figure 8. Key lock 30 P720 User Guide

Attaching a Kensington-style cable lock
You can use a Kensington-style cable lock to secure your computer to a desk, table, or other non-permanent fixture. The cable lock attaches to the security-lock slot at the rear of your computer. Depending on the type selected, the cable lock can be operated with a key or combination. You can order such a cable lock directly from Lenovo by searching for Kensington at: https://support.lenovo.com
Figure 9. Kensington-style cable lock
Viewing and changing security settings in the Setup Utility program
To view and change security settings in the Setup Utility program, do the following: 1. Start the Setup Utility program. See "Starting the Setup Utility program" on page 35. 2. Select Security. 3. Follow the instructions on the right side of the screen to view and change security settings. You can refer to "Using the Setup Utility program" on page 35 to get basic information about some major security settings. 4. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard settings). Then, select Yes in the window displayed, and press Enter.
Using passwords and Windows accounts
You can use BIOS passwords and Windows accounts to prevent unauthorized access to your computer and data. To use the BIOS passwords or the Windows accounts, do the following: · To use BIOS passwords, see "Using BIOS passwords" on page 37. · To use Windows accounts, do the following:
Chapter 4. Security 31

1. Click the Start button to open the Start menu. 2. Click Settings  Accounts. 3. Follow the instructions on the screen.
Using fingerprint authentication
If your keyboard has a fingerprint reader, you can use fingerprint authentication to replace passwords for simple and secure user access. To use fingerprint authentication, first enroll your fingerprints and associate them with your passwords (such as the power-on password, hard disk password, and Windows password). Use the fingerprint reader and the fingerprint program to complete this procedure.
To use fingerprint authentication, use the fingerprint tool provided by the Windows 10 operating system. Click the Start button to open the Start menu, and then click Settings  Accounts  Sign-in options. Follow the instructions on the screen.
To use the fingerprint reader, refer to the documentation shipped with the fingerprint keyboard or located on the Lenovo Support Web site at https://pcsupport.lenovo.com/solutions/pd014444.
Using the cover presence switch
The cover presence switch prevents your computer from logging in to the operating system when the computer cover is not properly installed or closed.
To use the cover presence switch, enable the cover-presence-switch connector on the system board first. To achieve this, do the following:
1. Start the Setup Utility program. See "Starting the Setup Utility program" on page 35. 2. Select Security  Chassis Intrusion Detection and press Enter. 3. Select Enabled and press Enter. 4. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard
settings), select Yes in the window displayed, and press Enter. The cover-presence-switch connector on the system board is enabled.
The cover presence switch starts functioning. If the switch detects that the computer cover is not correctly installed or closed, an error message is displayed when you turn on the computer. To fix the error and log in to the operating system, do the following:
1. Properly remove or install your computer cover. See Chapter 7 "Hardware removal and installation" on page 59.
2. Start and then exit the Setup Utility program. See "Starting the Setup Utility program" on page 35 and "Exiting the Setup Utility program" on page 40.
Using firewalls
A firewall can be hardware, software, or a combination of both depending on the level of security required. Firewalls work on a set of rules to determine which inbound and outbound connections are authorized. If your computer is preinstalled with a firewall program, it helps protect against computer Internet security threats, unauthorized access, intrusions, and Internet attacks. It also protects your privacy. For more information about how to use the firewall program, refer to the help system of your firewall program.
To use Windows Firewall, do the following: 1. Click the Start button to open the Start menu.
32 P720 User Guide

2. Click Windows System  Control Panel. 3. View Control Panel by Large icons or Small icons, and then click Windows Defender Firewall. 4. Follow the instructions on the screen.
Protecting data against viruses
Your computer is preinstalled with an antivirus program to help you guard against, detect, and eliminate viruses.
Lenovo provides a full version of antivirus software on your computer with a free 30-day subscription. After 30 days, you must renew the license to continue receiving the antivirus software updates.
Note: Virus definition files must be kept up-to-date to guard against new viruses.
For more information about how to use your antivirus software, refer to the help system of your antivirus software.
Using the Smart USB Protection function
The Smart USB Protection function is a security function that helps prevent data from being copied from the computer to USB storage devices connected to the computer. You can set the Smart USB Protection function to one of the following modes: · Disabled (default setting): You can use the USB storage devices without limitation. · Read Only: You cannot copy data from the computer to the USB storage devices. However, you can
access or modify data on the USB storage devices. · No Access: You cannot access the USB storage devices from the computer.
To configure the Smart USB Protection function, do the following: 1. Start the Setup Utility program. See "Starting the Setup Utility program" on page 35. 2. Select Security  Smart USB Protection and press Enter. 3. Select the desired setting and press Enter. 4. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard settings). Then, select Yes in the window displayed, and press Enter.
Computrace Agent software embedded in firmware (for selected models)
The Computrace Agent software is an IT asset management and computer theft recovery solution. The software detects if changes have been made on the computer, such as hardware, software, or the computer call-in location. You might have to purchase a subscription to activate the Computrace Agent software.
Trusted Platform Module (TPM)
TPM is a secure cryptoprocessor that stores cryptographic keys, which in turn protects information stored in your computer.
Intel BIOS guard
The BIOS guard module cryptographically verifies all the BIOS updates to the system BIOS flash. Therefore, the malware is blocked from attacking the BIOS.
Chapter 4. Security 33

34 P720 User Guide

Chapter 5. Advanced configuration
This chapter provides information to help you further configure the computer.
Using the Setup Utility program
The Setup Utility program is used to view and change the configuration settings of your computer. This section provides information about only the major configuration settings available in the program.
Note: The operating system settings might override any similar settings in the Setup Utility program.
Starting the Setup Utility program
To start the Setup Utility program, do the following: 1. Turn on or restart your computer. 2. Before the operating system starts up, repeatedly press and release F1 or Fn+F1 (depending on the keyboard settings). Based on the Setup Utility display mode setting, one of the following situations occurs: · Text mode: The Setup Utility program opens. · Graphic mode (available on some models): The start screen is displayed. Then, select Setup and press Enter to open the Setup Utility program.
Note: If a BIOS password has been set, the Setup Utility program will not open until you enter the correct password. For more information, see "Using BIOS passwords" on page 37.
To view and change the configuration settings, follow the instructions on the screen.
Changing the display mode of the Setup Utility program
You can use the Setup Utility program in the graphic mode or the text mode according to your needs. · Text mode: The keys on the keyboard used to perform various tasks are displayed at the bottom of the
screen.
Note: The Serial Port Console Redirection item is available only in the text mode. · Graphic mode (available on some models): In addition to the keyboard, you also can use the mouse to
make selections.
To change the display mode of the Setup Utility program, do the following: 1. Start the Setup Utility program. See "Starting the Setup Utility program" on page 35. 2. From the main interface, select Setup mode select and press Enter. 3. Select Graphic or Text and press Enter. 4. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard settings), select Yes in the window displayed, and press Enter.
Changing the display language of the Setup Utility program
The Setup Utility program supports three display languages: English, French, and simplified Chinese.
To change the display language of the Setup Utility program, do the following:

© Copyright Lenovo 2019, 2020

35

1. Start the Setup Utility program. See "Starting the Setup Utility program" on page 35. 2. From the main interface, locate System Language and press Enter. 3. Select the display language according to your needs.
Enabling or disabling a device
This section provides information about how to enable or disable user access to hardware devices (such as USB connectors or storage drives).
To enable or disable a device, do the following: 1. Start the Setup Utility program. See "Starting the Setup Utility program" on page 35. 2. Select Devices. 3. Select the device you want to enable or disable and press Enter. 4. Select the desired setting and press Enter. 5. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard settings). Then, select Yes in the window displayed, and press Enter.
Enabling or disabling the automatic power-on of your computer
The Automatic Power On item in the Setup Utility program provides various options for you to make your computer start up automatically.
To enable or disable the Automatic Power On features, do the following: 1. Start the Setup Utility program. See "Starting the Setup Utility program" on page 35. 2. Select Power  Automatic Power On and press Enter. 3. Select the feature you want to enable or disable and press Enter. 4. Select the desired setting and press Enter. 5. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard settings). Then, select Yes in the window displayed, and press Enter.
Enabling or disabling the ErP LPS compliance mode
Lenovo computers meet the eco-design requirements of the ErP Lot 3 regulation. For more information, go to: https://www.lenovo.com/ecodeclaration
You can enable the ErP LPS compliance mode in the Setup Utility program to reduce the consumption of electricity when your computer is off or in sleep mode.
To enable or disable the ErP LPS compliance mode, do the following: 1. Start the Setup Utility program. See "Starting the Setup Utility program" on page 35. 2. Select Power  Enhanced Power Saving Mode and press Enter. 3. Select Enabled or Disabled depending on your needs, and then press Enter. If you select Enabled, you also need to disable the Wake on LAN feature. See "Enabling or disabling the automatic power-on of your computer" on page 36. 4. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard settings). Then, select Yes in the window displayed, and press Enter.
When the ErP LPS compliance mode is enabled, you can wake up your computer by doing one of the following:
36 P720 User Guide

· Press the power button. · Enable the Wake Up on Alarm feature to make your computer wake up at a set time. See "Enabling or
disabling the automatic power-on of your computer" on page 36. · Enable the After Power Loss feature to make your computer wake up when the power supply resumes
after a sudden loss of electricity. To enable the After Power Loss feature, do the following:
1. Start the Setup Utility program. See "Starting the Setup Utility program" on page 35. 2. Select Power  After Power Loss and press Enter. 3. Select Power On and press Enter. 4. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard
settings). Then, select Yes in the window displayed, and press Enter.
Enabling or disabling the configuration change detection
With the configuration-change detection enabled, if the POST detects configuration changes of some hardware devices (such as storage drives or memory modules), an error message is displayed.
To enable or disable the configuration change detection, do the following: 1. Start the Setup Utility program. See "Starting the Setup Utility program" on page 35. 2. Select Security  Configuration Change Detection and press Enter. 3. Select the desired setting and press Enter. 4. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard settings). Then, select Yes in the window displayed, and press Enter.
To bypass the error message and log in to the operating system, do one of the following: · Press F2 or Fn+F2 (depending on the keyboard settings). · Start and then exit the Setup Utility program. See "Starting the Setup Utility program" on page 35 and
"Exiting the Setup Utility program" on page 40.
Changing the BIOS settings before installing a new operating system
BIOS settings vary by operating system. Change the BIOS settings before installing a new operating system.
To change the BIOS settings, do the following: 1. Start the Setup Utility program. See "Starting the Setup Utility program" on page 35. 2. From the main interface, select Exit  OS Optimized Defaults and press Enter. 3. Depending on the operating system to be installed, do one of the following: · To install the Windows 10 (64-bit) operating system, select Enabled and press Enter. · To install an operating system other than Windows 10 (64-bit), select Disabled and press Enter. 4. Select Yes in the window displayed and press Enter to confirm your selection. 5. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard settings). Then, select Yes in the window displayed, and press Enter.
Using BIOS passwords
By using the Setup Utility program, you can set passwords to prevent unauthorized access to your computer and data.
Chapter 5. Advanced configuration 37

You do not have to set any passwords to use your computer. However, using passwords improves computer security. If you decide to set any passwords, read the following topics.
Password types
The following types of passwords are available in the Setup Utility program: · Power-on password
When a power-on password is set, you are prompted to enter a valid password each time the computer is turned on. The computer cannot be used until the valid password is entered. · Administrator password Setting an administrator password deters unauthorized users from changing configuration settings. If you are responsible for maintaining the configuration settings of several computers, you might want to set an administrator password. When an administrator password is set, you are prompted to enter a valid password each time you try to access the Setup Utility program. The Setup Utility program cannot be accessed until a valid password is entered. If both the power-on password and administrator password are set, you can enter either password. However, you must use your administrator password to change any configuration settings. · Hard disk password Setting a hard disk password prevents unauthorized access to the data on the internal storage drive (such as a hard disk drive). When a hard disk password is set, you are prompted to enter a valid password each time you try to access the storage drive.
Notes: ­ Even if the storage drive is removed from one computer and installed in another, the hard-disk
password is still valid. ­ If the hard disk password is forgotten, there is no way to reset the password or recover data from the
storage drive.
Password considerations
A password can be any combination of up to 64 alphabetic and numeric characters. For security reasons, it is recommended to use a strong password that cannot be easily compromised.
Note: The Setup Utility program passwords are case-sensitive.
To set a strong password, consider the following guidelines: · Have at least eight characters in length · Contain at least one alphabetic character and one numeric character · Not be your name or your user name · Not be a common word or a common name · Be significantly different from your previous passwords
Setting, changing, or deleting a password
To set, change, or delete a password, do the following: 1. Start the Setup Utility program. See "Starting the Setup Utility program" on page 35. 2. Select Security. 3. Depending on the password type, select Set Power-On Password, Set Administrator Password, or Hard Disk Password and press Enter.
38 P720 User Guide

4. Follow the instructions on the right side of the screen to set, change, or delete a password.
Note: A password can be any combination of up to 64 alphabetic and numeric characters. For more information, see "Password considerations" on page 38. 5. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard settings). Then, select Yes in the window displayed, and press Enter.
Erasing lost or forgotten passwords (clearing CMOS)
This section provides instructions on how to erase lost or forgotten passwords, such as a user password.
Note: The instructions in this section do not apply to the hard disk password.
To erase a lost or forgotten password, do the following: 1. Remove any media from the drives and turn off all connected devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer. 2. Remove the computer cover. See Chapter 7 "Hardware removal and installation" on page 59. 3. Locate the Clear Complementary Metal Oxide Semiconductor (CMOS) /Recovery jumper on the system board. See "Hardware locations" on page 1. 4. Move the jumper from the standard position (pin 1 and pin 2) to the maintenance position (pin 2 and pin 3). 5. Reinstall the computer cover and connect the power cord. See Chapter 7 "Hardware removal and installation" on page 59. 6. Turn on the computer and leave it on for approximately 10 seconds. Then, turn off the computer by holding the power button for approximately five seconds. 7. Repeat step 1 and step 2. 8. Move the Clear CMOS /Recovery jumper back to the standard position (pin 1 and pin 2). 9. Reinstall the computer cover and connect the power cord.
10. Turn on the computer and the monitor. When the logo screen is displayed, press F1 or Fn+F1. 11. To prevent data loss, ensure that BIOS settings are restored to an earlier point.
Selecting a startup device
If your computer does not start up from the expected device, you can either change the startup device sequence or select a temporary startup device.
Changing the startup device sequence permanently
To change the startup device sequence permanently, do the following: 1. Depending on the type of the storage device, do one of the following: · If the storage device is internal, go to step 2. · If the storage device is a disc, ensure that your computer is turned on. Then, insert the disc into the optical drive. · If the storage device is an external device other than a disc, connect the storage device to the computer. 2. Start the Setup Utility program. See "Starting the Setup Utility program" on page 35. 3. Select Startup. 4. Follow the instructions on the right side of the screen to change the startup device sequence.
Chapter 5. Advanced configuration 39

5. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard settings). Then, select Yes in the window displayed, and press Enter.
Selecting a temporary startup device
Note: Not all discs and storage drives are bootable.
To select a temporary startup device, do the following: 1. Depending on the type of the storage device, do one of the following: · If the storage device is internal, go to step 2. · If the storage device is a disc, ensure that your computer is turned on. Then, insert the disc into the optical drive. · If the storage device is an external device other than a disc, connect the storage device to the computer. 2. Turn on or restart the computer. Before Windows starts up, repeatedly press and release F12 or Fn+F12 (depending on the keyboard settings) until Startup Device Menu is displayed. 3. Select the desired storage device and press Enter. The computer then starts up from the device you select.
If you want to select a permanent startup device, select Enter Setup on Startup Device Menu and press Enter to start the Setup Utility program. For more information about how to select a permanent startup device, see "Changing the startup device sequence permanently" on page 39.
Changing the fan speed level
The Fan Control Stepping item enables you to adjust the thermal performance of your computer. From level 1 to level 7, a higher fan speed level indicates better thermal performance with more noise.
To change the fan speed level, do the following: 1. Start the Setup Utility program. See "Starting the Setup Utility program" on page 35. 2. Select Power  Fan Control Stepping and press Enter. 3. Select a fan speed level and press Enter. 4. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard settings), select Yes in the window displayed, and press Enter.
Exiting the Setup Utility program
To exit the Setup Utility program, do one of the following: · If you want to save the new settings, press F10 or Fn+F10 (depending on the keyboard settings). Then,
select Yes in the window displayed and press Enter. · If you do not want to save the new settings, select Exit  Discard Changes and Exit and press Enter.
Then, select Yes in the window displayed and press Enter.
Updating and recovering the BIOS
The BIOS is the first program that the computer runs when you turn on the computer. The BIOS initializes the hardware components and loads the operating system and other programs.
40 P720 User Guide

Updating the BIOS When you install a new program, hardware device, or device driver, you might be informed to update the BIOS. You can update the BIOS from your operating system or a flash update disc (available only on some models).
To update the BIOS, do the following: 1. Go to https://support.lenovo.com. 2. To update the BIOS from your operating system, download the flash BIOS update driver according to your operating system version. To update the BIOS from a flash update disc, download the ISO image version (used to create a flash update disc). Then, download the installation instructions for the flash BIOS update driver. 3. Print the installation instructions you download and follow the instructions to update the BIOS.
Note: If you want to update the BIOS from a flash update disc, the installation instructions might not provide the instructions on how to record the update disc. See "Recording a disc" on page 20.
Recovering from a BIOS update failure To recover from a BIOS update failure, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Remove the computer cover. See Chapter 7 "Hardware removal and installation" on page 59. 3. Locate the Clear CMOS /Recovery jumper on the system board. See "Hardware locations" on page 1. 4. Remove any parts and cables that impede your access to the Clear CMOS /Recovery jumper. 5. Move the jumper from the standard position (pin 1 and pin 2) to the maintenance position (pin 2 and pin
3). 6. Reinstall the parts and cables that were removed. 7. Reinstall the computer cover and reconnect any cables that were disconnected. See Chapter 7
"Hardware removal and installation" on page 59. 8. Turn on the computer and insert the BIOS update disc into the optical drive. Wait a few minutes. The
recovery process begins. After the recovery process is completed, your computer will shut down automatically.
Note: If the computer does not start up from the disc, select the disc as the startup device. See "Selecting a temporary startup device" on page 40. 9. Repeat steps 1­4. 10. Move the Clear CMOS /Recovery jumper back to the standard position (pin 1 and pin 2). 11. Repeat step 6 and step 7. 12. Turn on the computer and the monitor. When the logo screen is displayed, press F1 or Fn+F1. 13. To prevent data loss, ensure that BIOS settings are restored to an earlier point.
Configuring RAID
This section provides information about storage drive requirements for RAID levels, and instructions on how to configure RAID for your computer. Depending on your computer model and configuration, you can configure RAID using one of the following utilities:
· Intel Rapid Storage Technology enterprise (RSTe) configuration utility · AVAGO MegaRAID Configuration Utility
Chapter 5. Advanced configuration 41

· Intel Virtual RAID on CPU configuration utility
An Introduction to RAID
RAID is a technology that provides increased storage functions and reliability through redundancy.
When a group of independent physical storage drives is set up to use RAID technology, they are in a RAID array. This array distributes data across multiple storage drives, but the array appears to the host computer as one single storage unit. Creating and using RAID arrays provides high performance, such as the expedited I/O performance, because several drives can be accessed simultaneously.
RAID drive groups configured according to certain RAID levels also improve data storage reliability and fault tolerance compared with single-drive storage systems. Data loss resulting from a drive failure can be prevented by reconstructing missing data from the remaining drives.
Note: For RAID 0, the missing data resulting from a drive failure cannot be reconstructed.
Configuring RAID with Intel RSTe
If your computer comes with the Intel RSTe configuration utility, you can follow the sections below to configure RAID with Intel RSTe.
Storage drive requirements for RAID levels Your computer supports the following RAID levels: · RAID 0: striped disk array
­ Consists of at least two SATA storage drives ­ Supported strip size: 4 KB, 8 KB, 16 KB, 32 KB, 64 KB, or 128 KB ­ Better performance without fault tolerance · RAID 1: mirrored disk array ­ Consists of two SATA storage drives ­ Improved reading performance and 100% redundancy · RAID 10: striped and mirrored disk array (a combination of RAID 0 and RAID 1) ­ Consists of four SATA storage drives ­ Supported strip size: 4 KB, 8 KB, 16 KB, 32 KB, or 64 KB · RAID 5: block-level striped disk array with distributed parity ­ Consists of at least three SATA storage drives ­ Supported strip size: 16 KB, 32 KB, 64 KB, or 128 KB ­ Better performance and fault tolerance
Creating a RAID volume Attention: All the existing data stored on the selected drives will be erased while the RAID volume is being created.
To create a RAID volume, do the following: 1. Enable RAID by doing the following: a. Start the Setup Utility program. See "Starting the Setup Utility program" on page 35. b. Select Devices  PCH SATA Configuration and press Enter. c. Select Configure SATA as and press Enter. Then, select RAID and press Enter.
42 P720 User Guide

d. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard settings), select Yes in the window displayed, and press Enter.
2. Start the Setup Utility program again. See "Starting the Setup Utility program" on page 35. 3. Select Advanced  Intel RSTe SATA Controller and press Enter. 4. Select Create RAID Volume and press Enter. The Create RAID Volume window is displayed. 5. Select and configure the options one by one.
a. Name: You can use the default name Volume0 or type a preferred name for the RAID volume. b. RAID Level: You can set the RAID level to one of the following:
· RAID0 · RAID1 · RAID10 · RAID5
Note: Some of the RAID levels might not be displayed because the number of installed SATA storage drives varies. c. Select Disks: Select a storage drive and press Enter. Then, select X and press Enter to add it to a group. d. Strip Size (if applicable): Select a strip size and press Enter. e. Capacity: Customize the capacity of the RAID volume. The default RAID volume is the largest value. 6. Select Create Volume and press Enter to create a RAID volume. 7. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard settings), select Yes in the window displayed, and press Enter.
Viewing the information about a RAID volume To view the information about a RAID volume, do the following:
1. Start the Setup Utility program. See "Starting the Setup Utility program" on page 35. 2. Select Advanced  Intel RSTe SATA Controller and press Enter. 3. Select RAID Volumes and press Enter. 4. Select a RAID volume and press Enter to view the detailed information.
Deleting a RAID volume Attention: All the existing data stored on the selected drives will be erased after you delete RAID volumes.
To delete a RAID volume, do the following: 1. Start the Setup Utility program. See "Starting the Setup Utility program" on page 35. 2. Select Advanced  Intel RSTe SATA Controller and press Enter. 3. Under RAID Volumes, select the RAID volume that you want to delete and press Enter. The RAID VOLUME INFO window is displayed. 4. Select Delete under Volume Actions and press Enter. When prompted, select Yes and press Enter to confirm the deletion of the selected RAID volume. 5. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard settings), select Yes in the window displayed, and press Enter.
Chapter 5. Advanced configuration 43

Configure RAID with AVAGO MegaRAID Configuration Utility
Before configuring RAID with AVAGO MegaRAID Configuration Utility, you must set the profile ID for the RAID controller:
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1. 2. Select Advanced  AVAGO MegaRAID Configuration Utility and press Enter. 3. Select Main Menu and press Enter. 4. Select Controller Management and press Enter. 5. Select Advanced Controller Properties and press Enter. 6. Select Profile Management and press Enter. 7. Select Choose Profile.
· If the RAID controller is Lenovo 9460-16i, select Profile 13. · If the RAID controller is Lenovo 9440-8i and the connected storage drive type is NVMe, select Profile
11. · If the RAID controller is Lenovo 9440-8i and the connected storage drive type is SATA or SAS, select
Profile 10. 8. Select Set Profile and press Enter. 9. Press F10 or Fn+F10 to save the changes and exit. 10. Restart the computer.
To configure RAID with AVAGO MegaRAID Configuration Utility, ensure that: · An AVAGO MegaRAID adapter is installed in your computer. · The storage drives used for RAID configuration are connected to the installed AVAGO MegaRAID adapter
instead of the system board.
Storage drive requirements for RAID levels Your computer supports the following RAID levels: · RAID 0: striped disk array
­ Consists of at least two SATA or Serial Attached SCSI (SAS) storage drives ­ Supported strip size: 64 KB, 128 KB, 256 KB, 512 KB, or 1 MB ­ Better performance without fault tolerance · RAID 1: mirrored disk array ­ Consists of two or four SATA or SAS storage drives ­ Improved read performance and 100% redundancy · RAID 10: striped and mirrored disk array (a combination of RAID 0 and RAID 1) ­ Consists of four SATA or SAS storage drives ­ Data being striped across storage drive groups ­ Provides both high data transfer rates and complete data redundancy · RAID 5: block-level striped disk array with distributed parity ­ Consists of at least three SATA or SAS storage drives ­ Supported strip size: 64 KB, 128 KB, 256 KB, 512 KB, or 1 MB ­ Better performance and fault tolerance ­ Available only on selected models of AVAGO MegaRAID adapters
44 P720 User Guide

· RAID 6: block-level striped disk array with dual distributed parity ­ Consists of at least four SATA or SAS storage drives ­ Supported strip size: 64 KB, 128 KB, 256 KB, 512 KB, or 1 MB ­ Better performance and fault tolerance that can stand up to loss of two storage drives ­ Available only on selected models of AVAGO MegaRAID adapters
Create a RAID volume Attention: All the existing data stored on the selected drives is erased while the RAID volume is being created.
To create a RAID volume: 1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1. 2. Select Advanced  AVAGO MegaRAID Configuration Utility and press Enter. 3. Select Main Menu and press Enter. 4. Select Configuration Management and press Enter. 5. Select Create Virtual Drive and press Enter. 6. Select and configure the options one by one. a. Select RAID Level: You can set the RAID level to one of the following: · RAID0 · RAID1 · RAID5 · RAID6 · RAID10
Note: Some of the RAID levels might not be displayed because the number of installed SATA storage drives and the model of the AVAGO MegaRAID adapter vary. b. Select Drives From: Select Unconfigured capacity or Free capacity depending on your needs and press Enter. c. Select Drives: Select a storage drive and press Enter. After selecting all storage drives for creating the RAID volume, select Apply Changes and press Enter. When promoted, select Confirm and press Enter. Then, select Yes and press Enter to save the storage drive selection. Finally, select OK and press Enter. d. Virtual Drive Name: You can type a preferred name for the volume name. e. Strip Size (if applicable): Select a strip size and press Enter. 7. Select Save Configuration and press Enter. When promoted, select Confirm and press Enter. Then, select Yes and press Enter to confirm the creation of the RAID volume. 8. Press F10 or Fn+F10 to save the changes and exit.
View the information about a RAID volume To view the information about a RAID volume:
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1. 2. Select Advanced  AVAGO MegaRAID Configuration Utility and press Enter. 3. Select Main Menu and press Enter. 4. Select Virtual Drive Management and press Enter.
Chapter 5. Advanced configuration 45

5. Select a RAID volume and press Enter to view the detailed information. 6. Press F10 or Fn+F10 to save the changes and exit.
Delete a RAID volume Attention: All the existing data stored on the selected drives will be erased after you delete RAID volumes.
To delete a RAID volume: 1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1. 2. Select Advanced  AVAGO MegaRAID Configuration Utility. 3. Select Main Menu and press Enter. 4. Select Virtual Drive Management and press Enter. 5. Select the RAID volume that is not needed and press Enter. 6. Under Operation, select Delete Virtual Drive and press Enter. 7. Select Go and press Enter. When prompted, select Confirm and press Enter. Then, select Yes and press Enter to delete the RAID volume. 8. Press F10 or Fn+F10 to save the changes and exit.
Configuring RAID with Intel Virtual RAID on CPU
To configure RAID with the Intel Virtual RAID on CPU configuration utility, ensure that: · An upgrade key module is connected to the Virtual RAID on CPU (VROC) connector on the system board.
See "Hardware locations" on page 1. · M.2 solid-state drives are installed in your computer.
Storage drive requirements for RAID levels Your computer supports the following RAID levels: · RAID 0: striped disk array
­ Consists of at least two M.2 solid-state drives ­ Supported strip size: 4 KB, 8 KB, 16 KB, 32 KB, 64 KB, or 128 KB ­ Better performance without fault tolerance · RAID 1: mirrored disk array ­ Consists of two M.2 solid-state drives ­ Improved reading performance and 100% redundancy · RAID 10: striped and mirrored disk array (a combination of RAID 0 and RAID 1) ­ Consists of four M.2 solid-state drives ­ Supported strip size: 4 KB, 8 KB, 16 KB, 32 KB, or 64 KB · RAID 5: block-level striped disk array with distributed parity ­ Consists of at least three M.2 solid-state drives ­ Supported strip size: 16 KB, 32 KB, 64 KB, or 128 KB ­ Better performance and fault tolerance ­ Available only on some models of upgrade key modules
46 P720 User Guide

Creating a RAID volume Attention: All the existing data stored on the selected drives will be erased while the RAID volume is being created.
To create a RAID volume, do the following: 1. Enable VMD for the selected M.2 solid-state drives by doing the following: a. Start the Setup Utility program. See "Starting the Setup Utility program" on page 35. b. Select Advanced  Intel(R) VMD technology and press Enter. c. Select each menu item and press Enter. Then, select Enabled and press Enter. d. Select an occupied M.2 solid-state drive slot as you need and press Enter. Then, select VMD and press Enter. e. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard settings), select Yes in the window displayed, and press Enter. 2. Start the Setup Utility program again. See "Starting the Setup Utility program" on page 35. 3. Select Advanced  Intel Virtual RAID on CPU and press Enter. 4. Select All Intel VMD Controllers and press Enter. 5. Select Create Volumes and press Enter. 6. Select and configure the options one by one. a. Name: You can use the default name Volume0 or type a preferred name for the RAID volume. b. RAID Level: You can set the RAID level to one of the following: · RAID0 · RAID1 · RAID10 · RAID5
Note: Some of the RAID levels might not be displayed because the number of installed M.2 solidstate drives and the model of the upgrade key module vary. c. Select Disks: Select an M.2 solid-state drive and press Enter. Then, select X and press Enter to add it to a group. d. Stripe Size (if applicable): Select a stripe size and press Enter. e. Capacity: Customize the capacity of the RAID volume. The default RAID volume is the largest value. 7. Select Create Volume and press Enter to create a RAID volume. 8. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard settings), select Yes in the window displayed, and press Enter.
Viewing the information about a RAID volume To view the information about a RAID volume, do the following:
1. Start the Setup Utility program. See "Starting the Setup Utility program" on page 35. 2. Select Advanced  Intel Virtual RAID on CPU and press Enter. 3. Select RAID Volumes and press Enter. 4. Select a RAID volume and press Enter to view the detailed information.
Deleting a RAID volume Attention: All the existing data stored on the selected drives will be erased after you delete RAID volumes.
Chapter 5. Advanced configuration 47

To delete a RAID volume, do the following: 1. Start the Setup Utility program. See "Starting the Setup Utility program" on page 35. 2. Select Advanced  Intel Virtual RAID on CPU and press Enter. 3. Select Intel VROC Mananged Volumes and press Enter. 4. Under Volume Actions, select Delete and press Enter. 5. When prompted, select Yes and press Enter to confirm the deletion of the selected RAID volume. 6. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard settings), select Yes in the window displayed, and press Enter.
48 P720 User Guide

Chapter 6. Troubleshooting, diagnostics, and recovery
This chapter provides solutions to resolve your computer problems. Follow the steps in the basic procedure for resolving computer problems, which helps you make good use of the troubleshooting, diagnostics, and recovery information.
Basic procedure for resolving computer problems
It is recommended that you use the following procedure to resolve computer problems you are experiencing: 1. Ensure that: a. The cables for all connected devices are connected correctly and securely. b. All connected devices that require ac power are connected to properly grounded, functioning electrical outlets. c. All connected devices are enabled in the BIOS settings of your computer. See "Enabling or disabling a device" on page 36. If these actions do not resolve your problem, continue with the next step. 2. Use an antivirus program to see if your computer has been infected by a virus. If the program detects a virus, remove the virus. If the antivirus program does not resolve your problem, continue with the next step. 3. Go to "Troubleshooting" on page 49 and follow the instructions for the type of problem you are experiencing. If these troubleshooting instructions do not resolve your problem, continue with the next step. 4. Run the diagnostic program. See "Diagnosing problems" on page 56. If the diagnostic program does not resolve your problem, continue with the next step. 5. Recover your operating system. See "Recovery information" on page 58. 6. If none of these actions solve your problem, contact the Lenovo Customer Support Center. For a list of Lenovo Support phone numbers, go to https://pcsupport.lenovo.com/supportphonelist. For more information about help, service, and technical assistance, see Chapter 8 "Getting information, help, and service" on page 141.
Troubleshooting
Attention: Do not open your computer or attempt any repair before reading and understanding the "Read this first: Important safety information" on page iii.
Use the troubleshooting information to find solutions to problems that have definite symptoms.
Startup problems
The computer does not start up when you press the power button. Solutions:
Ensure that: · The power cord is correctly connected to the rear of the computer and to a working electrical outlet. · If your computer has a secondary power switch on the rear of the computer, ensure that it is switched on. · The power indicator on the front of the computer is on.

© Copyright Lenovo 2019, 2020

49

· The computer voltage matches the voltage available at the electrical outlet for your country or region.
The operating system fails to start up. Solution:
Ensure that the startup device sequence set in the Setup Utility program includes the device where the operating system resides. Usually, the operating system is on the internal storage drive. For more information, see "Changing the startup device sequence permanently" on page 39.
The computer beeps multiple times before the operating system starts up. Solution:
Ensure that no keys are stuck.
Audio problems
The audio cannot be heard on the Windows operating system. Solutions: · If you are using powered external speakers that have an On/Off control, ensure that:
­ The On/Off control is set to the On position. ­ The speaker power cable is connected to a properly grounded, functional ac electrical outlet. · If your external speakers have a volume control, ensure that the volume is not set too low. · Click the volume icon in the Windows notification area on the taskbar. Ensure that the mute speakers settings are not selected and none of the volume settings is set too low.
Note: If the volume icon is not displayed in the Windows notification area, add the icon to the notification area. See the Windows help system. · For some computers that have a front audio panel, ensure that the volume is not set too low. · Ensure that your external speakers (and headphones, if used) are connected to the correct audio connectors on the computer. Most speaker cables are color-coded to match the connectors.
Note: When external-speaker or headphone cables are connected to the audio connectors, the internal speaker, if present, is disabled. In most cases, if an audio adapter is installed in one of the expansion slots, the audio function built into the system board is disabled. Therefore, you must use the audio connectors on the audio adapter. · Ensure that the program you are running is designed for use on the Windows operating system. If the program is designed to run in DOS, the program does not use the Windows sound feature. The program must be configured to use Sound Blaster Pro or Sound Blaster emulation. · Ensure that the audio device drivers are correctly installed.
The sound comes from one of the external speakers. Solutions: · Ensure that the speaker cable is inserted completely into the connector on the computer. · Right-click the volume icon in the Windows notification area on the taskbar. Then, click Open Volume
Mixer and select the desired speaker. Click the Levels tab and ensure that the Balance settings are set correctly.
Note: If the volume icon is not displayed in the Windows notification area, add the icon to the notification area. See the Windows help system.
50 P720 User Guide

CD or DVD problems
A CD or DVD does not work. Solutions: · Ensure that the power cable and signal cable are securely connected to the drive. · Ensure that the disc is inserted correctly, with its label up. · Ensure that the disc you are using is clean. To remove dust or fingerprints, wipe the disc clean with a soft
cloth from the center to the outside. Wiping a disc in a circular motion might cause loss of data. · Ensure that the disc you are using is not scratched or damaged. Try inserting another disc that you know
is good. If you cannot read from a known-good disc, you might have a problem with your optical drive or the cabling to your optical drive. · If you have multiple CD or DVD drives installed (or a combination of CD and DVD drives), try inserting the disc into the other drive. In some cases, only one of the drives is connected to the audio subsystem.
A bootable recovery medium, such as the Product Recovery CD, cannot be used to start your computer. Solution:
Ensure that the CD or DVD drive is set as the top priority of the Boot Priority Order in the Setup Utility program. Refer to "Selecting a temporary startup device" on page 40 for information about viewing and changing the startup sequence.
Note: On some computer models, the startup sequence is permanently set and cannot be changed.
A black screen is displayed instead of the DVD video. Solutions: · Restart the DVD player program. · Try a lower screen resolution or color depth. · Close any open files, and then restart the computer.
A DVD movie does not play. Solutions: · Ensure that the disc surface is clean and not scratched. · Check the disc or package for regional coding. You might need to purchase a disc with coding for the
region where you are using your computer.
No audio or only an intermittent audio comes out while a DVD movie is playing. Solutions: · Check the volume control settings on your computer and on your speakers. · Ensure that the disc surface is clean and not scratched. · Check all cable connections to and from the speakers. · Use the DVD menu for the video to select a different audio track.
The playback is slow or choppy. Solutions: · Disable any background programs, such as AntiVirus or Desktop Themes.
Chapter 6. Troubleshooting, diagnostics, and recovery 51

· Ensure that video resolution is lower than 1152 x 864 pixels.
A message indicating invalid disc or no disc found is displayed. Solutions: · Ensure that the disc is in the drive with the shiny side of the disc facing down. · Ensure that video resolution is lower than 1152 x 864 pixels. · Ensure that the DVD or CD is inserted into an appropriate optical drive. For example, do not insert a DVD
into a CD-only drive.
Intermittent problems
Intermittent problems refer to the problems occur only occasionally and are difficult to repeat.
Solutions: · Ensure that all cables and cords are securely connected to the computer and attached devices. · Ensure that when the computer is on, the fan grill is not blocked (there is air flow around the grill), and the
fans are working. If airflow is blocked or the fans are not working, the computer might overheat. · If Small Computer System Interface (SCSI) devices are installed, ensure that the last external device in
each SCSI chain is terminated correctly. For more information, see your SCSI documentation.
Storage drive problems
Some or all storage drives are missing from the Setup Utility program. Solutions: · Ensure that the signal cables and power cables for all the storage drives are connected correctly. · If the computer is installed with SAS storage drives, ensure that the AVAGO MegaRAID adapter is
correctly connected.
The computer cannot start up from the correct storage drive or the message "No Operating System Found" is displayed. Solutions: · Ensure that the signal cables and power cables for all the storage drives are connected correctly. · Ensure that the computer starts up from the correct storage drive. Set the storage drive, on which the
operating system resides, as the first startup device in the Setup Utility program. Refer to "Changing the startup device sequence permanently" on page 39.
Note: In rare cases, the storage drive with the operating system might get corrupted or damaged. If this problem occurs, replace the storage drive. Refer to Chapter 7 "Hardware removal and installation" on page 59.
Ethernet LAN problems
The computer cannot connect to an Ethernet LAN. Solutions: · Connect the cable from the Ethernet connector to the RJ45 connector of the hub. · Enable the Ethernet LAN feature in the Setup Utility program. · Enable the Ethernet LAN adapter.
52 P720 User Guide

1. Click the Start button to open the Start menu. 2. Click Windows System  Control Panel. 3. View Control Panel by Large icons or Small icons, and then click Network and Sharing Center 
Change adapter settings. 4. Right-click the Ethernet LAN adapter icon and click Enable. · Update or reinstall the Ethernet LAN driver. See "Keeping your computer current" on page 28. · Install all networking software that is necessary for your network environment. Check with your LAN administrator for the necessary networking software. · Set the same duplex for the switch port and the adapter. If you configured the adapter for full duplex, ensure that the switch port is also configured for full duplex. Setting the wrong duplex mode might degrade performance, cause data loss, or result in lost connections.
When a Gigabit Ethernet model computer is used at a speed of 1000 Mbps, the Ethernet LAN connection fails or errors occur. Solution:
Connect the network cable to the Ethernet connector using Category 5 wiring and a 100 BASE-T hub/switch (not 100 BASE-X).
A Gigabit Ethernet model computer should connect to the network at a speed of 1000 Mbps but at only a speed of 100 Mbps. Solutions: · Try another cable. · Set the link partner to auto-negotiate. · Set the switch to be 802.3ab-compliant (gigabit over copper).
The Wake On LAN feature does not work. Solution:
Enable the Wake On LAN feature in the Setup Utility program.
Wireless LAN problem
Note: The wireless LAN feature is available only on some models.
The wireless LAN feature does not work. Solutions: · Enable the wireless LAN feature in the Setup Utility program. · For Windows 10, enable the wireless LAN feature in Windows Settings. Click the Start button to open the
Start menu, and then click Settings  Network & Internet  Wi-Fi. Turn on the Wi-Fi feature. · Enable the wireless LAN adapter.
1. Click the Start button to open the Start menu. 2. Click Windows System  Control Panel. 3. View Control Panel by Large icons or Small icons, and then click Network and Sharing Center 
Change adapter settings. 4. Right-click the wireless LAN adapter icon and click Enable. · Update or reinstall the wireless LAN driver. See "Keeping your computer current" on page 28.
Chapter 6. Troubleshooting, diagnostics, and recovery 53

Bluetooth problems
Note: The Bluetooth feature is available only on some models.
The Bluetooth feature does not work. Solutions: · Enable the Bluetooth feature in the Setup Utility program. · Enable the Bluetooth devices. Do the following:
1. Right-click the Start button to open the Start context menu. 2. Click Device Manager. Type the administrator password or provide confirmation if prompted. 3. Expand Bluetooth to display the Bluetooth devices. Then, right-click each Bluetooth device and then
Click Enable device. 4. Expand Network adapters. Then, right-click each Bluetooth device and then Click Enable device. · Turn on the Bluetooth radio on Windows 10. Do the following: 1. Click the Start button to open the Start menu. 2. Click Settings  Devices  Bluetooth & other devices. 3. Turn on the Bluetooth switch to enable the Bluetooth feature. · Update or reinstall the Bluetooth driver. See "Keeping your computer current" on page 28.
No sound comes from the Bluetooth headset or headphones. Solution:
Set the Bluetooth headset or headphones as the default device. 1. Exit the application that uses the sound device (for example, Windows Media Player). 2. Right-click the volume icon in the Windows notification area on the taskbar.
Note: If the volume icon is not displayed in the Windows notification area, add the icon to the notification area. See the Windows help system. 3. Click Playback devices. 4. If you are using the Headset profile, select Bluetooth Hands-free Audio, and then click Set Default. If you are using the AV profile, select Stereo Audio, and then click Set Default. 5. Click OK.
Performance problems
Excessive fragmented files exist on the storage drives. Solution:
Use the Windows disk defragmentation or disk optimization feature to clean up the files.
Note: Depending on the volume of the storage drives and amount of data stored on the storage drives, the disk-defragmentation process might take up to several hours.
1. Close any open programs and windows. 2. Click the Start button to open the Start menu. 3. Click Windows System  File Explorer  This PC. 4. Right-click your C drive and then click Properties.
54 P720 User Guide

5. Click the Tools tab. 6. Click Optimize. Select the desired drive and then click Optimize. 7. Follow the instructions on the screen.
The free storage drive space is insufficient. Solutions:
Free up the storage drive space. · Clean out your Inbox, Sent Items, and Deleted Items folders from your e-mail application. · Clean up your C drive.
1. Click the Start button to open the Start menu. 2. Click Windows System  File Explorer  This PC. 3. Right-click your C drive and then click Properties. 4. Check the amount of free space, and then click Disk Cleanup. 5. A list of unnecessary file categories is displayed. Select each file category you want to delete, and
then click OK. · Turn some Windows features off or remove some unnecessary programs.
1. Click the Start button to open the Start menu. 2. Click Windows System  Control Panel. 3. View Control Panel by Large icons or Small icons, and then click Programs and Features. 4. Do one of the following:
­ To turn some Windows features off, click Turn Windows features on or off. Follow the instructions on the screen.
­ To remove some unnecessary programs, select the program you want to remove, and then click Uninstall/Change or Uninstall.
The free memory space is insufficient. Solutions: · Right-click a blank area on the taskbar and open Task Manager. Then, end some tasks you are not
performing. · Install additional memory modules. See Chapter 7 "Hardware removal and installation" on page 59. To
purchase memory modules, go to: https://www.lenovo.com
Serial connector problem
The serial connector cannot be accessed. Solutions: · Connect the serial cable from the serial connector on the computer to the serial device. If the serial device
has its own power cord, connect the power cord to a grounded electrical outlet. · Turn on the serial device and keep the device online. · Install any programs supplied with the serial device. Refer to the documentation that comes with the serial
device for more information. · If you added one serial-connector adapter, ensure that the adapter is installed correctly.
Chapter 6. Troubleshooting, diagnostics, and recovery 55

USB device problem
A USB device cannot be accessed. Solutions: · Connect the USB cable from the USB connector to the USB device. If the USB device has its own power
cord, connect the power cord to a grounded electrical outlet. · Turn on the USB device and keep the device online. · Install any device drivers or programs supplied with the USB device. Refer to the documentation that
comes with the USB device for more information. · Disconnect and reconnect the USB connector to reset the USB device. · Ensure that the Smart USB Protection function is disabled. To configure the Smart USB Protection
function, see "Using the Smart USB Protection function" on page 33.
Software and driver problems
For some programs, dates cannot be sorted in correct order. Solution:
Some programs developed before the year 2000 use only the last two digits of a year to sort dates, assuming the first two digits are 19. Consequently, dates cannot be sorted in correct order nowadays. Check with your software manufacturer to see if any updates are available. Many software manufacturers make updates available from the World Wide Web.
Some programs do not work as expected. Solutions:
1. Check whether the problem is caused by a program. a. Ensure that the software is compatible with your computer. Refer to the information supplied with the software for more information. b. Verify that other software works properly on your computer. c. Verify that the software you are using works on another computer.
2. If the problem is caused by a program: · Refer to the printed documentation that comes with the program or the help system of the program for troubleshooting information. · Update the program. See "Keeping your computer current" on page 28. · Uninstall the program and then reinstall it. To download a program that is preinstalled on your computer, go to https://support.lenovo.com and follow the instructions on the screen.
A device does not work properly due to device driver problems. Solution:
Update the device driver. See "Keeping your computer current" on page 28.
Diagnosing problems
Many computer problems can be solved without outside assistance. If you experience a problem with your computer, the first place to start is the troubleshooting information in your computer documentation. If you suspect a software problem, see the documentation, including readme files and help information systems,
56 P720 User Guide

that come with the operating system or program. ThinkStation computers come with a set of diagnostic programs that you can use to help you identify hardware problems.
Diagnosing problems with Lenovo Vantage Lenovo Vantage is preinstalled on your computer and is ready to run.
Note: If you are unable to isolate and repair the problem yourself after running Lenovo Vantage, save and print the log files created by the program. You need the log files when you speak to a Lenovo technical support representative.
Lenovo Vantage supports the hardware scan function. It combines diagnostic tests, system information collection, security status, and support information, along with hints and tips for optimal system performance.
The troubleshooting information or the diagnostic programs might tell you that you need additional or updated device drivers or other software. You can get the latest technical information and download device drivers and updates from the Lenovo Support Web site at: https://support.lenovo.com
Diagnosing problems with ThinkStation Diagnostics ThinkStation Diagnostics is preinstalled on your computer and also is available for download at: https://www.lenovo.com/diags
ThinkStation Diagnostics enables you to troubleshoot and resolve computer problems. The program notifies you of any issues detected by the real-time hardware diagnostic monitoring function. The program also provides the details of the issue, analyzes possible causes, and provides solutions.
Hardware diagnostics The hardware diagnostics function enables your computer to monitor hardware components in real time for potential issues or errors without impacting the performance. When an issue or error is detected, hardware diagnostic information is presented in either of the following ways:
· If the ThinkStation Diagnostics application is installed and running on your computer, an issue or error message is displayed in the Windows notification area. Go to ThinkStation Diagnostics for more information and suggested solutions.
· If the ThinkStation Diagnostics application is not installed or running on your computer, depending on your computer configuration, do either of the following: 1. If your computer has the four-digit diagnostic display installed, an error code is displayed on the fourdigit diagnostic display on the front of the computer. Check the error code at the following Web site: https://thinkworkstationsoftware.com/diags 2. If the signal diagnostic LED indicator is available on your computer, the diagnostic LED indicator blinks to indicate that an issue or error is detected. Then you can use the Lenovo PC Diagnostics application installed in your smartphone to transfer the error code from the computer to the smartphone for further analysis. The application is available for download at both Google Play and iTunes App Store.
The hardware diagnostics function is enabled on your computer by default. If you want to disable the function, do the following:
1. Start the Setup Utility program. See "Starting the Setup Utility program" on page 35. 2. From the main interface, select Advanced  Diagnostics, and then press Enter. 3. Select Real-time Diagnostics Monitoring and press Enter. Then select Disabled and press Enter.
Chapter 6. Troubleshooting, diagnostics, and recovery 57

4. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard settings). Then, select Yes in the window displayed, and press Enter.
Recovery information
This section provides instructions on how to recover your operating system. Note: If a device does not work correctly after recovering the operating system, update the device driver. See "Keeping your computer current" on page 28.
To recover your Windows 10 operating system, use the following solutions: · Use Windows recovery solutions.
­ Use recovery solutions in Windows Settings. 1. Click the Start button to open the Start menu. 2. Click Settings  Update & Security  Recovery. 3. Follow the instructions on the screen to choose the appropriate recovery solution.
­ Use System Restore to restore system files and settings to an earlier point. 1. Click the Start button to open the Start menu. 2. Click Windows System  Control Panel. 3. View Control Panel by Large icons or Small icons, and then click Recovery  Open System Restore. 4. Follow the instructions on the screen.
­ Use the File History tool to restore your files from a backup.
Note: If you use the File History tool to restore your files from a backup, ensure that you backed up your data earlier with the tool.
1. Click the Start button to open the Start menu. 2. Click Windows System  Control Panel. 3. View Control Panel by Large icons or Small icons, and then click File History  Restore personal
files. 4. Follow the instructions on the screen. ­ Use the Windows recovery environment by doing one of the following: ­ After several consecutive failed boot attempts, the Windows recovery environment might start
automatically. Follow the instructions on the screen to choose the appropriate recovery solution. ­ Select the recovery medium you created earlier with the Windows tool as the startup device. See
"Selecting a temporary startup device" on page 40. Then, follow the instructions on the screen to choose the appropriate recovery solution. · Use the recovery USB key provided by Lenovo to restore the entire storage drive to the factory-default settings. ­ If your computer comes with the recovery USB key, follow the instructions shipped with the USB key. ­ If your computer does not come with the recovery USB key, contact the Lenovo Customer Support Center to order a recovery USB key. See "Calling for service" on page 142.
58 P720 User Guide

Chapter 7. Hardware removal and installation
This chapter provides instructions on how to remove and install hardware for your computer.
Handling static-sensitive devices
Do not open the static-protective package containing the new part until the defective part has been removed and you are ready to install the new part. Static electricity, although harmless to you, can seriously damage computer components and options.
When you handle options and other computer components, take these precautions to avoid static-electricity damage: · Limit your movement. Movement can cause static electricity to build up around you. · Always handle options and other computer components carefully. Handle PCI/PCIe cards, memory
modules, system boards, and microprocessors by the edges. Never touch any exposed circuitry. · Prevent others from touching the options and other computer components. · Touch the static-protective package containing the part to a metal expansion-slot cover or other
unpainted metal surface on the computer for at least two seconds. This reduces static electricity from the package and your body before you install or replace a new part. · When possible, remove the new part from the static-protective package, and install it directly in the computer without setting the part down. When this is not possible, place the static-protective package on a smooth, level surface and place the part on the package. · Do not place the part on the computer cover or other metal surface.
Preparing your computer and removing the computer cover
Attention: Do not open your computer or attempt any repair before reading and understanding the "Read this first: Important safety information" on page iii.
CAUTION:
Avoid contact with hot components inside the computer. During operation, some components become hot enough to burn the skin. Before you open the computer cover, turn off the computer, disconnect power, and wait approximately 10 minutes for the components to cool.
Before installing or removing any hardware component in your computer, do the following to prepare your computer and remove the computer cover:
1. Remove any media from the drives and turn off all attached devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Unlock any locking device that secures the computer cover. See "Locking your computer" on page 29.

© Copyright Lenovo 2019, 2020

59

3. Press the pit 1 on the handle of the computer cover latch so that the handle is lifted. Pivot the handle as shown and pull the handle to remove the cover from the chassis.
Figure 10. Removing the computer cover Notes: · Depending on your computer model, some of the hardware parts in the installing or replacing section
might not be available. · Use computer parts provided only by Lenovo. · When installing or replacing an option, use the appropriate instructions in this section along with the
instructions that come with the option. · In most areas of the world, Lenovo requires the return of the defective CRU. Information about this will
come with the CRU or will come a few days after the CRU arrives.
Removing and installing hardware
This section provides instructions on how to remove and install hardware for your computer. You can expand the capabilities of your computer and maintain your computer by removing or installing hardware. Attention: Do not open your computer or attempt any repair before reading and understanding the "Read this first: Important safety information" on page iii.
External options
You can connect external options to your computer, such as external speakers, a printer, or a scanner. For some external options, you must install additional software in addition to making the physical connection. When installing an external option, see "Hardware locations" on page 1 to identify the required connector.
60 P720 User Guide

Then, use the instructions that come with the option to help you make the connection and install any required software or device drivers.
Device in the flex bay
Attention: Do not open your computer or attempt any repair before reading and understanding the "Read this first: Important safety information" on page iii.
The flex bay of your computer supports the following devices: · Flex module · Front-access storage enclosure · Multi-drive conversion kit · Optical drive · Slim-optical-drive adapter
Note: The following instructions on how to remove or install an optical drive also apply to other supported devices in the flex bay.
To remove or install an optical drive, do the following: 1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 59. 2. Locate the flex bay. See "Computer components" on page 7. 3. To remove the optical drive, do the following: a. Disconnect the signal cable and the power cable from the rear of the optical drive.
Note: If you are removing other supported devices from the flex bay, disconnect any additional cables first. b. Then, press tabs 1 toward each other as shown, and push the rear of the optical drive to slide it out of the computer.

Figure 11. Removing the optical drive

Chapter 7. Hardware removal and installation 61

4. To install an optical drive, do the following: a. If you are installing an optical drive into a flex bay with a plastic shield installed, press the clip as shown to remove the plastic shield. If there is a metal static shield installed in the flex bay, remove the metal static shield.
Figure 12. Removing the plastic shield in the flex bay
62 P720 User Guide

b. Press the tabs 1 toward each other as shown, and slide the new optical drive halfway into the bay from the front of the computer. Then, release the tabs and continue to slide the optical drive into the bay until it snaps into position.
Figure 13. Installing the optical drive c. Connect the signal cable and the power cable to the new optical drive.
Note: Reconnect any cables removed from other supported devices.
Figure 14. Connecting cables to the optical drive What to do next: · To work with another piece of hardware, go to the appropriate section. · To complete the installation or replacement, go to "Completing the parts replacement" on page 137.
Device in the multi-drive conversion kit
Attention: Do not open your computer or attempt any repair before reading and understanding the "Read this first: Important safety information" on page iii.
Chapter 7. Hardware removal and installation 63

The multi-drive conversion kit (hereafter referred to as kit) might be equipped with either one or both of the following components: · Slim optical drive · Storage drive (such as hard disk drive, solid-state drive, or hybrid drive) Slim optical drive Note: The instructions on how to remove or install a slim optical drive in the kit also apply to the slim-opticaldrive adapter. To remove or install a slim optical drive, do the following:
1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 59. 2. Ensure that all the cables are disconnected from the kit. Remove the kit from the front of the computer.
See "Device in the flex bay" on page 61. 3. To remove the slim optical drive from the kit, do the following:
a. Press the clip through the hole in the top of the kit as shown and push forward the slim optical drive. Then, remove the slim optical drive out of the kit.
Figure 15. Removing the slim optical drive from the kit b. Detach the bracket as shown to remove it from the slim optical drive.
Figure 16. Removing the bracket from the slim optical drive 4. To install a new slim optical drive into the kit, do the following:
64 P720 User Guide

a. Align the three tabs on the bracket with the corresponding holes in the new slim optical drive. Then, install the bracket to the new slim optical drive.
Figure 17. Installing the bracket to the new slim optical drive b. Insert the new slim optical drive into the kit until you hear a click. The slim optical drive is secured in
place.
Figure 18. Installing the slim optical drive into the kit 5. Slide the kit into the flex bay and reconnect the cables. What to do next: · To work with another piece of hardware, go to the appropriate section. · To complete the installation or replacement, go to "Completing the parts replacement" on page 137. 3.5-inch storage drive To remove or install a 3.5-inch storage drive, do the following: 1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 59. 2. Ensure that all the cables are disconnected from the kit. Remove the kit from the front of the computer.
See "Device in the flex bay" on page 61.
Chapter 7. Hardware removal and installation 65

3. Press the clip as shown to open the rear cover of the kit.
Figure 19. Opening the rear cover of the kit 4. Press both clips simultaneously toward each other and pull the conversion bracket out of the rear of the
kit.
Figure 20. Removing the conversion bracket from the kit
66 P720 User Guide

5. Flex both sides of the conversion bracket and then remove the 3.5-inch storage drive out of the bracket. Do not touch the circuit board 1 on the drive.
Figure 21. Removing the 3.5-inch storage drive from the conversion bracket 6. To install a 3.5-inch storage drive, ensure that the conversion bracket is unfolded. To unfold the bracket,
do the following: a. Remove pins 1 and reinstall them into slots 2 .
Figure 22. Removing pins and reinstalling them into slots
Chapter 7. Hardware removal and installation 67

b. Release tabs 1 , 2 , and 3 from the corresponding slots.
Figure 23. Releasing tabs from the corresponding slots c. Unfold the bracket as shown.
Figure 24. Unfolding the bracket
68 P720 User Guide

d. Insert tabs 1 , 2 , and 3 into the corresponding slots. Ensure that the tabs are secured in place.
Figure 25. Inserting tabs into the corresponding slots 7. To install a 3.5-inch storage drive into the conversion bracket, do the following:
a. Flex both sides of the bracket and align pins 1 , 2 , 3 , and 4 on the bracket with the corresponding holes in the new 3.5-inch storage drive.
b. Install the new 3.5-inch storage drive into the bracket. Do not touch the circuit board 5 on the drive.
Figure 26. Installing the new 3.5-inch storage drive into the bracket Chapter 7. Hardware removal and installation 69

8. Slide the new 3.5-inch storage drive with bracket into the kit from the rear until the drive snaps into position.
Figure 27. Installing the new 3.5-inch storage drive with bracket into the kit 9. Pivot the rear cover of the kit inward until you hear a click. Ensure that the rear cover is secured in place.
Figure 28. Pivoting the rear cover inward 10. Slide the kit into the flex bay and reconnect the cables. What to do next: · To work with another piece of hardware, go to the appropriate section. · To complete the installation or replacement, go to "Completing the parts replacement" on page 137. 2.5-inch storage drive To remove or install a 2.5-inch storage drive, do the following:
1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 59. 2. Ensure that all the cables are disconnected from the kit. Remove the kit from the front of the computer.
See "Device in the flex bay" on page 61.
70 P720 User Guide

3. Press the clip as shown to open the rear cover of the kit.
Figure 29. Opening the rear cover of the kit 4. Press both clips simultaneously toward each other and pull the conversion bracket out of the rear of the
kit.
Figure 30. Removing the conversion bracket from the kit 5. To remove the 2.5-inch storage drive, flex both sides of the conversion bracket and then remove the
drive out of the bracket. Do not touch the circuit board on the drive.
Figure 31. Removing the 2.5-inch storage drive from the bracket Chapter 7. Hardware removal and installation 71

6. To install a 2.5-inch storage drive, ensure that the conversion bracket is folded. To fold the bracket, do the following: a. Remove pins 1 and reinstall them into slots 2 .
Figure 32. Removing pins and reinstalling them into new slots b. Pivot the bracket as shown to release tabs 1 , 2 , and 3 from the slots.
Figure 33. Pivoting the bracket c. Fold the bracket as shown.
Figure 34. Folding the bracket 72 P720 User Guide

d. Insert tabs 1 , 2 , and 3 into the corresponding slots. Ensure that the tabs are secured in place.
Figure 35. Inserting the tabs into the corresponding slots 7. To install a 2.5-inch storage drive into the conversion bracket, do the following:
a. Flex both sides of the bracket and align pins 1 , 2 , 3 , and 4 on the bracket with the corresponding holes in the new 2.5-inch storage drive.
b. Install the new 2.5-inch storage drive into the bracket. Do not touch the circuit board 5 on the drive.
Figure 36. Installing the new 2.5-inch storage drive into the bracket Chapter 7. Hardware removal and installation 73

8. Slide the new 2.5-inch storage drive with bracket into the kit from the rear until the drive snaps into position.
Figure 37. Installing the new 2.5-inch storage drive with bracket into the kit 9. Pivot the rear cover of the kit inward until you hear a click. Ensure that the rear cover is secured in place.
Figure 38. Pivoting the rear cover inward 10. Slide the kit into the flex bay and reconnect the cables. What to do next: · To work with another piece of hardware, go to the appropriate section. · To complete the installation or replacement, go to "Completing the parts replacement" on page 137.
Flex-bay bracket
Attention: Do not open your computer or attempt any repair before reading and understanding the "Read this first: Important safety information" on page iii. To remove or install the flex-bay bracket, do the following:
1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 59. 2. Remove the device that is installed in the flex-bay bracket. See "Device in the flex bay" on page 61. 74 P720 User Guide

3. To remove the flex-bay bracket, do the following: a. Press the retaining clip 1 on the top of the flex-bay bracket. b. Pivot the bracket outward from the rear to remove it from the computer chassis.
Figure 39. Removing the flex-bay bracket 4. To install the flex-bay bracket, do the following:
a. Position the flex-bay bracket into the chassis at a relative angle of about 45-degree as shown. Align the two posts on the top and the bottom of the flex-bay bracket with the notches in the computer chassis.
Figure 40. Positioning the flex-bay bracket into the chassis
Chapter 7. Hardware removal and installation 75

b. Pivot the flex-bay bracket inward as shown until it snaps into position.
Figure 41. Installing the flex-bay bracket 5. Reinstall the device that is removed from the bracket. What to do next: · To work with another piece of hardware, go to the appropriate section. · To complete the installation or replacement, go to "Completing the parts replacement" on page 137.
Cover presence switch
Attention: Do not open your computer or attempt any repair before reading and understanding the "Read this first: Important safety information" on page iii. To remove or install the cover presence switch, do the following:
1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 59. 2. Remove the flex-bay bracket. See "Flex-bay bracket" on page 74. 3. To remove the cover presence switch, do the following:
a. Locate the cover presence switch. See "Computer components" on page 7. b. Disconnect the cover presence switch cable from the system board.
76 P720 User Guide

c. Slide the cover presence switch as shown to remove it from the computer chassis.
Figure 42. Removing the cover presence switch 4. To install a new cover presence switch, do the following:
a. Align the two notches in the new cover presence switch with the two tabs on the computer chassis. Then, push the new cover presence switch inward until it is seated securely between the tabs.
Figure 43. Installing the cover presence switch b. Connect the cable of the new cover presence switch to the cover presence switch connector on the
system board. See "Parts on the system board" on page 8. 5. Reinstall the flex-bay bracket. What to do next: · To work with another piece of hardware, go to the appropriate section. · To complete the installation or replacement, go to "Completing the parts replacement" on page 137.
Chapter 7. Hardware removal and installation 77

3.5-inch storage drive in the storage drive bay
A 3.5-inch storage drive on your computer might be a 3.5-inch hard disk drive or a 3.5-inch hybrid drive. Depending on your computer model, one of the following types of storage drive bracket is used in the storage drive bay:
Figure 44. Two types of storage drive bracket To remove or install a 3.5-inch storage drive in a type 1 bracket, do the following:
1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 59. 2. Locate the storage drive bay. See "Internal storage drives" on page 10. 3. To remove a 3.5-inch storage drive from a type 1 bracket, do the following:
a. Open the handles on both sides of the storage drive bracket. Disconnect the cables from the storage drive, and pull out the bracket with the storage drive.
Figure 45. Removing the type 1 storage drive bracket
78 P720 User Guide

b. Flex both sides of the bracket to remove the storage drive from the bracket.
Figure 46. Removing the storage drive from the type 1 bracket 4. To install a 3.5-inch storage drive in a type 1 bracket, do the following:
a. Open the handles on both sides of the storage drive bracket, and pull out the empty bracket. b. Flex both sides of the bracket and align pins 1 on the bracket with the corresponding holes in the
new storage drive. Notes: · Ensure that the circuit board 2 faces upward and the connectors 3 face toward the front of the
bracket. · Do not touch the circuit board 2 on the storage drive.
Figure 47. Installing the storage drive into the type 1 bracket Chapter 7. Hardware removal and installation 79

5. Slide the bracket with the new storage drive into the storage drive bay.
Figure 48. Installing the type 1 storage drive bracket 6. Connect the signal cable and the power cable to the new storage drive, and then close the handles on
both sides of the bracket. To remove or install a 3.5-inch storage drive in a type 2 bracket, do the following:
1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 59. 2. Locate the storage drive bay. See "Internal storage drives" on page 10. 3. Press the pit on the bracket cover, and then grasp the tilted cover to pull the bracket out of the storage
drive bay.
Figure 49. Removing the type 2 storage drive bracket 80 P720 User Guide

4. To remove a storage drive from the type 2 bracket, flex both sides of the bracket to remove the storage drive from the bracket.
Figure 50. Removing the storage drive from the type 2 bracket 5. To install a new storage drive in the type 2 bracket, flex both sides of the bracket and align pins 1 on
the bracket with the corresponding holes in the drive. Notes: · Ensure that the circuit board 3 faces upward and the connectors 2 face toward the rear of the
bracket. · Do not touch the circuit board 3 on the storage drive.
Figure 51. Installing the storage drive into the type 2 bracket
Chapter 7. Hardware removal and installation 81

6. Slide the bracket with the new storage drive into the storage drive bay until it snaps into position.
Figure 52. Installing the type 2 storage drive bracket What to do next: · To work with another piece of hardware, go to the appropriate section. · To complete the installation or replacement, go to "Completing the parts replacement" on page 137.
2.5-inch storage drive in the storage drive bay
Depending on your computer model, one of the following types of storage drive bracket is used in the storage drive bay:
Figure 53. Two types of storage drive bracket To remove or install a 2.5-inch storage drive in a type 1 bracket, do the following:
1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 59. 2. Locate the storage drive bay. See "Internal storage drives" on page 10. 3. To remove a 2.5-inch storage drive in a type 1 bracket, do the following:
82 P720 User Guide

a. Open the handles on both sides of the storage drive bracket. Disconnect the cables from the storage drive, and pull out the bracket with the storage drive.
Figure 54. Removing the type 1 storage drive bracket b. Flex both sides of the bracket to remove the 2.5-inch storage drive from the bracket.
Note: If a 3.5-inch storage drive also is installed in the bracket, remove the 3.5-inch storage drive first. See "3.5-inch storage drive in the storage drive bay" on page 78.
Figure 55. Removing the storage drive from the type 1 bracket 4. To install a 2.5-inch storage drive in a type 1 bracket, do the following:
a. Open the handles on both sides of the storage drive bracket, and pull out the empty bracket.
Chapter 7. Hardware removal and installation 83

b. Flex both sides of the bracket and align pins 1 on the bracket with the corresponding holes in the new storage drive. Note: If you are installing a 2.5-inch hard disk drive, ensure that the circuit board faces downward and the connectors 2 face toward the front of the bracket.
Figure 56. Installing the storage drive into the type 1 bracket 5. Slide the bracket with the new storage drive into the storage drive bay.
Note: Ensure that the storage drive is on the upper side. Flip over the storage drive bracket if necessary.
Figure 57. Installing the type 1 storage drive bracket 6. Connect the signal cable and the power cable to the new storage drive, and then close the handles on
both sides of the bracket. 84 P720 User Guide

To remove or install a 2.5-inch storage drive in a type 2 bracket, do the following: 1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 59. 2. Locate the storage drive bay. See "Internal storage drives" on page 10. 3. Press the pit on the bracket cover, and then grasp the tilted cover to pull the bracket out of the storage drive bay.
Figure 58. Removing the type 2 storage drive bracket 4. To remove a storage drive from a type 2 bracket, flex both sides of the bracket and then remove the
storage drive out of the bracket.
Figure 59. Removing the storage drive from the type 2 bracket
Chapter 7. Hardware removal and installation 85

5. To install a new storage drive in a type 2 bracket, flex both sides of the bracket and align pins 1 on the bracket with the corresponding holes in the drive. Note: If you are installing a 2.5-inch hard disk drive, ensure that the circuit board faces downward and the connectors 2 face toward the rear of the bracket.
Figure 60. Installing the storage drive into the type 2 bracket 6. Slide the bracket with the new storage drive into the storage drive bay until it snaps into position.
Figure 61. Installing the type 2 storage drive bracket 86 P720 User Guide

What to do next: · To work with another piece of hardware, go to the appropriate section. · To complete the installation or replacement, go to "Completing the parts replacement" on page 137.
2.5-inch storage drive with a converter in the storage drive bay
Depending on your computer model, one of the following types of storage drive bracket is used in the storage drive bay:
Figure 62. Two types of storage drive bracket To remove or install a 2.5-inch storage drive with a converter in a type 1 bracket, do the following:
1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 59. 2. Locate the storage drive. See "Internal storage drives" on page 10. 3. To remove a 2.5-inch storage drive with a converter in a type 1 bracket, do the following:
a. Open the handles on both sides of the storage drive bracket. Disconnect the cables from the converter, and pull out the bracket.
Figure 63. Removing the type 1 storage drive bracket
Chapter 7. Hardware removal and installation 87

b. Flex both sides of the bracket to remove the converter from the bracket.
Figure 64. Removing the converter from the type 1 bracket c. Lift the tab 1 of the metal bracket and push the metal bracket with force as shown. Then slide the
bracket and remove it from the plastic frame.
Figure 65. Removing the metal bracket from the plastic frame of the converter d. Carefully flex both sides of the metal bracket to remove the storage drive from the bracket.
Figure 66. Removing the storage drive from the metal bracket of the converter 4. To install a 2.5-inch storage drive with a converter in a type 1 bracket, do the following:
a. Open the handles on both sides of the storage drive bracket and pull out the empty bracket. b. If the converter is installed in the bracket, flex both sides of the bracket to remove the converter from
the bracket.
88 P720 User Guide

c. Carefully flex both sides of the metal bracket and align the four tabs 1 on the metal bracket with the corresponding holes in the new storage drive. Note: Ensure that the connectors of the storage drive face toward the tab of the metal bracket.
Figure 67. Installing the storage drive into the metal bracket of the converter d. Insert the four posts 1 on the metal bracket into the corresponding slots in the plastic frame as
shown.
Figure 68. Inserting the metal bracket into the plastic frame of the converter
Chapter 7. Hardware removal and installation 89

e. Push the metal bracket down until the tab 1 is slightly curved. Then, push the bracket with the storage drive forward as shown until the tab 1 snaps into position.
Figure 69. Installing the metal bracket into the plastic frame of the converter f. Flex both sides of the plastic bracket and align pins 1 on the plastic bracket with the corresponding
holes in the plastic frame of the converter. Note: Ensure that the circuit board faces upward and the connectors 2 face toward the front of the bracket.
Figure 70. Installing the converter into the type 1 bracket
90 P720 User Guide

5. Slide the storage drive bracket with the converter into the storage drive bay.

Figure 71. Installing the type 1 storage drive bracket
6. Connect the signal cable and the power cable to the converter, and then close the handles on both sides of the storage drive bracket.
To remove or install a 2.5-inch storage drive with a converter in a type 2 bracket, do the following: 1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 59. 2. Locate the storage drive bay. See "Internal storage drives" on page 10. 3. Press the pit on the bracket cover, and then grasp the tilted cover to pull the bracket out of the storage drive bay.

Figure 72. Removing the type 2 storage drive bracket

Chapter 7. Hardware removal and installation 91

4. To remove a 2.5-inch storage drive with a converter in a type 2 bracket, do the following: a. Flex both sides of the bracket to remove the converter from the bracket.
Figure 73. Removing the converter from the type 2 bracket b. Lift the tab 1 of the metal bracket and push the metal bracket with force as shown. Then slide the
bracket and remove it from the plastic frame.
Figure 74. Removing the metal bracket from the plastic frame of the converter c. Carefully flex both sides of the metal bracket to remove the storage drive from the bracket.
Figure 75. Removing the storage drive from the metal bracket of the converter 5. To install a new 2.5-inch storage drive with a converter in a type 2 bracket, do the following:
a. If the converter is installed in the bracket, flex both sides of the bracket to remove the converter from the bracket.
92 P720 User Guide

b. Carefully flex both sides of the metal bracket and align the four tabs 1 on the metal bracket with the corresponding holes in the new storage drive. Note: Ensure that the connectors of the storage drive face toward the tab of the metal bracket.
Figure 76. Installing the storage drive into the metal bracket of the converter c. Insert the four posts 1 on the metal bracket into the corresponding slots in the plastic frame as
shown.
Figure 77. Inserting the metal bracket into the plastic frame of the converter
Chapter 7. Hardware removal and installation 93

d. Push the metal bracket down until the tab 1 is slightly curved. Then, push the bracket with the storage drive forward as shown until the tab 1 snaps into position.
Figure 78. Installing the metal bracket into the plastic frame of the converter e. Flex both sides of the plastic bracket and align pins 1 on the plastic bracket with the corresponding
holes in the plastic frame of the converter. Notes: · Ensure that the circuit board faces downward and the connectors face toward the rear of the
bracket. · Do not touch the circuit board on the storage drive during operation.
Figure 79. Installing the converter into the type 2 bracket
94 P720 User Guide

6. Slide the storage drive bracket with the converter into the storage drive bay until it snaps into position.
Figure 80. Installing the type 2 storage drive bracket What to do next: · To work with another piece of hardware, go to the appropriate section. · To complete the installation or replacement, go to "Completing the parts replacement" on page 137.
M.2 solid-state drive
Attention: Do not open your computer or attempt any repair before reading and understanding the "Read this first: Important safety information" on page iii. An M.2 solid-state drive can be installed in the storage drive carrier, on the M.2 solid-state drive holder or on an M.2 solid-state drive PCIe adapter. M.2 solid-state drive in the storage drive bracket To remove or install an M.2 solid-state drive, do the following:
1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 59. 2. To remove the M.2 solid-state drive, do the following:
Chapter 7. Hardware removal and installation 95

a. Unlock the M.2 solid-state drive carrier with the provided key as shown. Store the keys in a secure place. Press the eject button to eject the carrier from the storage drive bracket. Then, grasp the M.2 solid-state drive carrier by its edge and gently pull it out of the bracket.
Figure 81. Removing the M.2 solid-state drive carrier b. Remove two screws and slide the cover as shown to remove the cover from the carrier.
Figure 82. Removing the cover of the M.2 solid-state drive carrier 96 P720 User Guide

c. Loosen the screw that secures the M.2 solid-state drive. Then, remove the M.2 solid-state drive out of the slot at an angle of about 20 degrees. Notes: · Pay attention to the direction of the notch 1 in the new drive. · Do not touch the circuit board of the M.2 solid-state drive.
Figure 83. Removing the M.2 solid-state drive 3. To install the M.2 solid-state drive, do the following:
a. Insert the new M.2 solid-state drive into the slot at an angle of about 20 degrees. Pivot the M.2 solidstate drive downward. Then, tighten the screw to secure the M.2 solid-state drive.
Figure 84. Installing the M.2 solid-state drive
Chapter 7. Hardware removal and installation 97

b. Reinstall the cover of the carrier as shown and reinstall the screws to secure the cover.
Figure 85. Installing the cover c. Reinstall the carrier into the bracket as shown until it snaps in to position. Lock the carrier with the
key. Always store the keys in a secure place.
Figure 86. Reinstall the carrier M.2 solid-state drive in the M.2 solid-sate drive holder To remove or install an M.2 solid-state drive, do the following: 98 P720 User Guide

1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 59. 2. Lay the computer on its side for easier access to the M.2 solid-state drive slots. 3. Locate the M.2 solid-state drive slots. See "Parts on the system board" on page 8. 4. To remove the M.2 solid-state drive holder, pull and pivot the tab on the front fan assembly as shown to
open the latch inside 1 . Slightly pivot the metal sheet to release the M.2 solid-state drive holder 2 . Then, grasp the M.2 solid-state drive holder by its top edge and gently pull it out of the M.2 solid-state drive slots 3 .
Figure 87. Removing the M.2 solid-state drive holder
Chapter 7. Hardware removal and installation 99

5. To remove the M.2 solid-state drive heat sink, turn the mounting stud 90-degree counterclockwise to release the heat sink. Then, lift the heat sink off the M.2 solid-state drive holder.
Figure 88. Removing the heat sink from the M.2 solid-state drive holder 6. To remove the M.2 solid-state drive, do the following:
a. Loosen the screw that secures the M.2 solid-state drive 1 . b. Remove the M.2 solid-state drive with the screw holder from the M.2 solid-state drive slot 2 . c. Remove the screw holder from the M.2 solid-state drive 3 .
Figure 89. Removing the M.2 solid-state drive 7. To install an M.2 solid-state drive, do the following:
100 P720 User Guide

a. Align the notch 1 in the screw holder with the corresponding notch 2 in the M.2 solid-state drive. Insert the screw holder onto the new M.2 solid-state drive as shown.
Figure 90. Inserting the screw holder onto the M.2 solid-state drive b. Hold the new M.2 solid-state drive by its edges and ensure that the circuit board side is facing
upward. Insert the drive into the corresponding slot until it is firmly secured. Notes: · Pay attention to the direction of the notch 1 in the new drive. · Do not touch the circuit board of the M.2 solid-state drive. · If only one M.2 solid-state drive is installed on the M.2 solid-state drive holder, ensure that the
drive is installed in the M.2 solid-state drive slot 1 ( 21 ). See "Parts on the system board" on page 8.
Figure 91. Installing the M.2 solid-state drive
Chapter 7. Hardware removal and installation 101

c. Tighten the screw to secure the new M.2 solid-state drive. Note: Do not overtighten the screw.
Figure 92. Securing the M.2 solid-state drive 8. To install the M.2 solid-state drive heat sink, do the following:
a. If necessary, remove the film that protects the thermal pad on the heat sink. b. Insert the two hooks on the heat sink into the corresponding holes in the M.2 solid-state drive holder
as shown 1 . Then, press the heat sink downward. Ensure that the mounting stud on the heat sink is aligned with the hole in the M.2 solid-state drive holder 2 .
Figure 93. Installing the heat sink onto the M.2 solid-state drive holder
102 P720 User Guide

c. Press the mounting stud downward and turn the mounting stud 90-degree clockwise to secure the heat sink to the M.2 solid-state drive holder.
Figure 94. Securing the heat sink to the M.2 solid-state drive holder 9. To install the M.2 solid-state drive holder, align the notches on the M.2 solid-state drive holder with the
slot keys in the M.2 solid-state drive slot. Then, slide the plastic retainer of the holder downward into the corresponding slot in the front fan assembly. Insert the holder into the slots until the M.2 solid-state drive is securely seated 1 . Then, pivot the tab on the front fan assembly to secure the holder 2 . Note: Do not touch the circuit board of the M.2 solid-state drive holder.
Figure 95. Installing the M.2 solid-state drive holder What to do next: · To work with another piece of hardware, go to the appropriate section. · To complete the installation or replacement, go to "Completing the parts replacement" on page 137.
Chapter 7. Hardware removal and installation 103

M.2 solid-state drive in an M.2 solid-state drive PCIe adapter Install M.2 solid-state drives in the alphabetic order as shown.
Figure 96. M.2 solid-state drive installation order To remove or install an M.2 solid-state drive in the M.2 solid-state drive PCIe adapter, do the following:
1. Remove the M.2 solid-state drive PCIe adapter from the PCIe card slot. See "Full-length PCIe card" on page 116.
2. Slide the cover latches to the open position. Then, pivot the cover as shown until it stops.
Figure 97. Opening the cover
104 P720 User Guide

3. Loosen the screws that secure the M.2 solid-state drive heat sink. Then, remove the heat sink as shown.
Figure 98. Removing the heat sink 4. To remove the M.2 solid-state drive, pull the handle of the retention latch outward to release the M.2
solid-state drive. Then, remove the M.2 solid-state drive from the PCIe adapter.
Figure 99. Removing the M.2 solid-state drive 5. To install an M.2 solid-state drive, do the following:
Chapter 7. Hardware removal and installation 105

a. If necessary, move the retention latch to an appropriate location to suit the length of the new M.2 solid-state drive.
Figure 100. Adjusting the location of the retention latch on the PCIe adapter b. If necessary, remove the film on the thermal pad on which you want to install the M.2 solid-state
drive. c. Pull the handle of the retention latch outward to the open position.
Figure 101. Opening the retention latch 106 P720 User Guide

d. Hold the new M.2 solid-state drive by its edges and ensure that the circuit board side is facing upward. Align the notch in the new M.2 solid-state drive with the slot key in the M.2 slot. Insert the drive into the corresponding slot on the PCIe adapter until it is firmly seated. Then, insert the plug of the retention latch into the hole to secure the new drive. Note: Do not touch the circuit board of the M.2 solid-state drive.
Figure 102. Installing the M.2 solid-state drive 6. Install the heat sink as shown. Then tighten the screws to secure the heat sink.
Figure 103. Installing the heat sink onto the PCIe adapter
Chapter 7. Hardware removal and installation 107

7. Install the cover as shown. Then, slide the cover latches to the locked position.
Figure 104. Closing the cover 8. Install the M.2 solid-state drive PCIe adapter in a PCIe x16 card slot on the system board. See "Parts on
the system board" on page 8 and "Full-length PCIe card" on page 116. What to do next: · To work with another piece of hardware, go to the appropriate section. · To complete the installation or replacement, go to "Completing the parts replacement" on page 137.
Power supply assembly
Attention: Do not open your computer or attempt any repair before reading and understanding the "Read this first: Important safety information" on page iii. Although there are no moving parts in your computer after the power cord has been disconnected, the following warnings are required for your safety. CAUTION: Keep fingers and other parts of your body away from hazardous, moving parts. If you suffer an injury, seek medical care immediately.
108 P720 User Guide

DANGER Disconnect all power cords from electrical outlets before removing the computer cover or any part that has the above label attached. DO NOT disassemble components that have the above label attached. There are no serviceable parts inside these components. Your product is designed for safe use. However, hazardous voltage, current, and energy levels are present inside any component that has this label attached. Disassembling of these components might cause fire or might even result in death. If you suspect a problem with one of these parts, contact a service technician. To remove or install the power supply assembly, do the following: 1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 59. 2. To remove the power supply, pull the handle on the power supply assembly and pivot it downward as
shown. Then, pull the entire power supply assembly out of the chassis.
Figure 105. Removing the power supply assembly 3. Ensure that the new power supply assembly is the correct replacement.
Chapter 7. Hardware removal and installation 109

4. To install a new power supply, insert the new power supply assembly with the handle open into the chassis. Then, pivot the handle as shown to fully install the new power supply assembly into position. Note: When pivoting the handle to the closed position, push hard if you feel resistance.
Figure 106. Installing the power supply assembly What to do next: · To work with another piece of hardware, go to the appropriate section. · To complete the installation or replacement, go to "Completing the parts replacement" on page 137.
PCIe card
Attention: Do not open your computer or attempt any repair before reading and understanding the "Read this first: Important safety information" on page iii. Your computer comes with the following combinations: one standard PCI card slot, one PCIe 3.0 x4 card slot, one PCIe 3.0 x8 card slot, and three PCIe 3.0 x16 card slots.
110 P720 User Guide

Install PCIe cards according to the corresponding slot types and the following illustrated installation order: Note: If your computer has only one microprocessor installed, only some PCIe card slots are usable.
Figure 107. PCIe card installation order Notes: · The instructions on how to remove or install a PCIe card also applies to the PCI card. · If your computer comes with a full-length PCIe card, refer to "Full-length PCIe card" on page 116 for its
replacement instructions. To remove or install a PCIe card, do the following:
1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 59. 2. Lay the computer on its side for easier access to the system board. 3. To remove a PCIe card retainer, do the following:
a. Pull and pivot the tab on the front fan assembly as shown to open the latch inside.
Figure 108. Opening the latch in the front fan assembly
Chapter 7. Hardware removal and installation 111

b. Gently pull the PCIe card retainer out of the slot in the front fan assembly and then remove the card retainer from the PCIe card latch. Note: The PCIe card retainer is only available on some models.
Figure 109. Removing the PCIe card retainer 4. To remove the PCIe card, do the following:
112 P720 User Guide

a. Lift the plastic PCIe card latch at the rear of the computer. Then, pivot the latch outward to rest it on the edge of the rear panel.
Figure 110. Opening the PCIe card latch b. If the PCIe card is connected to another device, disconnect the cable from the card first.
Chapter 7. Hardware removal and installation 113

c. If the old PCIe card is held in place by a retaining latch, press the card retaining latch 1 as shown to disengage the latch. Then grasp the card and gently pull it out of the slot. Note: The card might fit tightly into the slot. If necessary, alternately move each side of the card a small amount until the card is removed from the slot.
Figure 111. Removing a PCIe card 5. To install a new PCIe card, do the following:
a. Remove the new PCIe card from its static-protective package.
114 P720 User Guide

b. Lift the plastic PCIe card latch at the rear of the computer. Then, pivot the latch outward to rest it on the edge of the rear panel.
Figure 112. Opening the PCIe card latch c. Remove the appropriate metal slot cover. Install the new card into the appropriate slot on the system
board. See "Parts on the system board" on page 8. d. Pivot the PCIe card latch and push it back in until it snaps into position. e. If the new PCIe card needs to be connected to another device, connect the cable of the device to the
new PCIe card.
Chapter 7. Hardware removal and installation 115

6. To install a PCIe card retainer, insert the corresponding end of the PCIe card retainer into the gaps in the PCIe card latch as shown. Pivot the retainer downward to insert the part a into the corresponding slot in the front fan assembly. Then, pivot the tab on the front fan assembly to close the latch inside.
Figure 113. Installing the PCIe card retainer Note: If the replaced PCIe card is a PCIe RAID controller, make sure that the profile ID of the new RAID controller is correct. See "Configure RAID with AVAGO MegaRAID Configuration Utility" on page 44. What to do next: · To work with another piece of hardware, go to the appropriate section. · To complete the installation or replacement, go to "Completing the parts replacement" on page 137.
Full-length PCIe card
Attention: Do not open your computer or attempt any repair before reading and understanding the "Read this first: Important safety information" on page iii. Your computer comes with the following combinations: one standard PCI card slot, one PCIe 3.0 x4 card slot, one PCIe 3.0 x8 card slot, and three PCIe 3.0 x16 card slots. To remove or install a full-length PCIe card, do the following:
1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 59. 2. Lay the computer on its side for easier access to the system board.
116 P720 User Guide

3. Lift the plastic PCIe card latch at the rear of the computer. Then, pivot the latch outward to rest it on the edge of the rear panel.
Figure 114. Opening the PCIe card latch 4. Pull and pivot the tab on the front fan assembly as shown to open the latch inside.
Figure 115. Opening the latch in the front fan assembly Chapter 7. Hardware removal and installation 117

5. To remove a full-length PCIe card, disconnect the power cable from the card first. Press the card retaining latch as shown to disengage the latch, and grasp the old card and gently pull it out of the slot. Notes: · Remove any parts that might prevent your access to the latch. · The card might fit tightly into the slot. If necessary, alternately move each side of the card a small amount until the card is removed from the slot.
Figure 116. Removing a full-length PCIe card 6. To install a full-length PCIe card, do the following:
a. If you are installing a new full-length PCIe card, remove the appropriate metal slot cover. b. Remove the new full-length PCIe card from its static-protective package. c. Align the extender on the new full-length PCIe card with the corresponding slot in the front fan
assembly. Then, install the new card into the appropriate slot on the system board. See "Parts on the system board" on page 8. Note: It is recommended that you install the full-length PCIe card into a PCIe 3.0 x16 card slot for best performance. 7. Pivot the PCIe card latch and push it back in until it snaps into position. Then, pivot the tab on the front fan assembly to close the latch inside. 8. Connect one end of the power cable to the new full-length PCIe card and the other end to the appropriate power connector on the system board. See "Parts on the system board" on page 8. What to do next: 118 P720 User Guide

· To work with another piece of hardware, go to the appropriate section. · To complete the installation or replacement, go to "Completing the parts replacement" on page 137.
Super capacitor module
Attention: Do not open your computer or attempt any repair before reading and understanding the "Read this first: Important safety information" on page iii. To remove or install the super capacitor module, do the following:
1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 59. 2. Lay the computer on its side for easier access to the super capacitor module. 3. To remove the super capacitor module, do the following:
a. Pull and pivot the tab on the front fan assembly as shown to open the latch inside.
Figure 117. Opening the latch in the front fan assembly
Chapter 7. Hardware removal and installation 119

b. Disconnect the super-capacitor-module cable from the RAID adapter. Then, remove the holder with the failing super capacitor module.
Figure 118. Removing the super capacitor module 4. To install a new super capacitor module, do the following:
a. Touch the static-protective package that contains the new super capacitor module and its holder to any unpainted surface on the outside of the computer. Then, remove the new super capacitor module and its holder from the package.
b. Pull and pivot the tab on the front fan assembly as shown to open the latch inside.
Figure 119. Opening the latch in the front fan assembly c. Connect the super-capacitor-module cable to the super capacitor module connector on the RAID
adapter.
120 P720 User Guide

d. Insert the corresponding end of the holder into the gaps in the PCIe card latch as shown. Pivot the holder downward to insert the part a into the corresponding slot in the front fan assembly. Then, pivot the tab on the front fan assembly to secure the holder.
Figure 120. Installing the super capacitor module What to do next: · To work with another piece of hardware, go to the appropriate section. · To complete the installation or replacement, go to "Completing the parts replacement" on page 137.
Front fan assembly
Attention: Do not open your computer or attempt any repair before reading and understanding the "Read this first: Important safety information" on page iii. CAUTION: Keep fingers and other parts of your body away from hazardous, moving parts. If you suffer an injury, seek medical care immediately. To remove or install the front fan assembly, do the following:
1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 59. 2. Remove the following devices if any:
· M.2 solid-state drive holder, see "M.2 solid-state drive" on page 95 · Any full-length PCIe cards, see "Full-length PCIe card" on page 116 · PCIe card retainer, see "PCIe card" on page 110 · Super capacitor module, see "Super capacitor module" on page 119 3. To remove the front fan assembly, do the following:
Chapter 7. Hardware removal and installation 121

a. Pull the front fan assembly by the handle to slide it out of the computer chassis. Note: When you slide out the front fan assembly, avoid pulling the front-fan-assembly cable.
Figure 121. Removing the front fan assembly b. Disconnect the front-fan-assembly cable from the front-fan-assembly connector on the system
board. 4. To install a new front fan assembly, do the following:
a. Connect the cable of the new front fan assembly to the front-fan-assembly connector on the system board. See "Parts on the system board" on page 8.
b. Align the top and bottom edges of the new front fan assembly with the two slots in the computer chassis. Then, slide the new front fan assembly inward until it cannot be pushed in further.
Figure 122. Installing the front fan assembly 122 P720 User Guide

c. Ensure that the front fan assembly is securely seated.
Figure 123. Ensuring that the front fan assembly is securely seated 5. Reinstall the M.2 solid-state drive holder, any full-length PCIe cards, the PCIe card retainer, and the
super capacitor module if you have removed them. What to do next: · To work with another piece of hardware, go to the appropriate section. · To complete the installation or replacement, go to "Completing the parts replacement" on page 137.
Rear fan assembly
Attention: Do not open your computer or attempt any repair before reading and understanding the "Read this first: Important safety information" on page iii. CAUTION: Keep fingers and other parts of your body away from hazardous, moving parts. If you suffer an injury, seek medical care immediately. To remove or install the rear fan assembly, do the following:
1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 59. 2. Locate the rear fan assembly. See "Computer components" on page 7. 3. To remove the rear fan assembly, do the following:
a. Locate and disconnect the rear-fan-assembly cable from the rear-fan-assembly connector on the system board.
Chapter 7. Hardware removal and installation 123

b. Press the rear fan assembly as shown and remove it from the chassis.
Figure 124. Removing the rear fan assembly 4. To install a new rear fan assembly, do the following:
124 P720 User Guide

a. Align the two tabs 1 on the new rear fan assembly with the two corresponding slots in the computer chassis.
Figure 125. Positioning the rear fan assembly Chapter 7. Hardware removal and installation 125

b. Pivot the new rear fan assembly toward the rear panel as shown until it snaps into position.
Figure 126. Installing the rear fan assembly c. Connect the rear-fan-assembly cable to the rear-fan-assembly connector on the system board. See
"Parts on the system board" on page 8. What to do next: · To work with another piece of hardware, go to the appropriate section. · To complete the installation or replacement, go to "Completing the parts replacement" on page 137.
Memory module
Attention: Do not open your computer or attempt any repair before reading and understanding the "Read this first: Important safety information" on page iii. Your computer has 12 slots for installing DDR4 RDIMMs that provide up to a maximum of 768 GB system memory. When removing or installing a memory module, use the following guidelines: · Use 8 GB, 16 GB, 32 GB, or 64 GB DDR4 ECC RDIMMs in any combination up to a maximum of 768 GB. · If your computer has only one microprocessor installed, install memory modules only in the memory slots
next to that microprocessor following the recommended installation order. Note: Ensure that the microprocessor is installed into the correct microprocessor socket ( 18 Microprocessor 1). See "Parts on the system board" on page 8. · If your computer has two microprocessors installed, install equal numbers of memory modules in both sets of microprocessor DIMM slots for maximum performance.
126 P720 User Guide

· Always install DIMMs in the following order as illustrated:
Figure 127. Memory module installation order To remove or install a memory module, do the following:
1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 59. 2. Remove the flex-bay bracket. See "Flex-bay bracket" on page 74. 3. Remove the rear fan assembly. See "Rear fan assembly" on page 123. 4. Lay the computer on its side for easier access to the system board. 5. Locate and disconnect the memory fan cable from the system board. Open the handle on the memory
air baffle and lift the air baffle out of the chassis.
Figure 128. Removing the memory air baffle 6. Locate the memory module slot. See "Parts on the system board" on page 8.
Chapter 7. Hardware removal and installation 127

7. To remove the memory module, open the retaining clips and gently pull the memory module out of the memory slot.
Figure 129. Removing a memory module 8. To install a memory module, do the following:
a. Open the retaining clips of the memory slot into which you want to install the memory module.
Figure 130. Opening the retaining clips b. Position the new memory module over the memory slot. Ensure that the notch 1 on the memory
module aligns correctly with the slot key 2 on the system board. Push the memory module straight down into the slot until the retaining clips close.
Figure 131. Installing a memory module 128 P720 User Guide

9. Connect the memory fan cable on the memory air baffle to the memory fan connector on the system board. See "Parts on the system board" on page 8.
10. To reinstall the memory air baffle, do the following: Note: Ensure that all the retaining clips on the memory slots are closed. a. Install one end of the memory air baffle on the memory slot area. Ensure that the two notches on the memory air baffle fit into the gaps between memory slots.
Figure 132. Installing one end of the memory air baffle b. Pivot the other end of the memory air baffle downward. Ensure that the two notches on the other end
of the memory air baffle fit into the gaps between memory slots.
Figure 133. Pivoting the other end of the memory air baffle downward
Chapter 7. Hardware removal and installation 129

c. Close the handle of the memory air baffle.
Figure 134. Closing the handle of the memory air baffle 11. Reinstall the rear fan assembly and the flex-bay bracket. What to do next: · To work with another piece of hardware, go to the appropriate section. · To complete the installation or replacement, go to "Completing the parts replacement" on page 137.
Coin-cell battery
Attention: Do not open your computer or attempt any repair before reading and understanding the "Read this first: Important safety information" on page iii. Your computer has a special type of memory that maintains the date, time, and settings for built-in features, such as parallel-connector assignments (configuration). A coin-cell battery keeps this information active when you turn off the computer. The coin-cell battery normally requires no charging or maintenance throughout its life; however, no battery lasts forever. If the coin-cell battery fails, the date and time information is lost. Refer to the "Lithium coin cell battery notice" in the Safety, Warranty, and Setup Guide for information about replacing and disposing of the battery. To remove or install the coin-cell battery, do the following:
1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 59. 2. Locate the coin-cell battery. See "Parts on the system board" on page 8. 3. Remove any parts that might impede your access to the coin-cell battery. Depending on your computer
model, you might need to remove the PCIe cards for easier access to the coin-cell battery. See "PCIe card" on page 110 and "Full-length PCIe card" on page 116.
130 P720 User Guide

4. Remove the old coin-cell battery as shown.
Figure 135. Removing the coin-cell battery 5. Install a new coin-cell battery as shown.
Figure 136. Installing a coin-cell battery 6. Reinstall the PCIe cards if you have removed them. See "PCIe card" on page 110 or "Full-length PCIe
card" on page 116. 7. Reinstall the computer cover and connect the cables. See "Completing the parts replacement" on page
137. Note: When the computer is turned on for the first time after the coin-cell battery is replaced, an error message might be displayed. This is normal after the coin-cell battery is replaced. 8. Turn on the computer and all attached devices. 9. Use the Setup Utility program to set the date and time. See "Using the Setup Utility program" on page 35.
Wi-Fi units
Attention: Do not open your computer or attempt any repair before reading and understanding the "Read this first: Important safety information" on page iii. The Wi-Fi units include a Wi-Fi adapter, a Wi-Fi card, and a Wi-Fi antenna. To remove or install the Wi-Fi units, do the following:
1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 59.
Chapter 7. Hardware removal and installation 131

2. To remove the Wi-Fi antenna, unscrew the Wi-Fi antenna cable from the rear of the computer. Figure 137. Removing the Wi-Fi antenna
132 P720 User Guide

3. If your computer comes with a Wi-Fi card that supports the Bluetooth function, disconnect the Bluetooth cable from the Wi-Fi adapter.
Figure 138. Disconnecting the Bluetooth cable 4. To remove the Wi-Fi adapter, do the following:
Chapter 7. Hardware removal and installation 133

a. Lift the plastic PCIe card latch at the rear of the computer. Then, pivot the latch outward to rest it on the edge of the rear panel.
Figure 139. Opening the PCIe card latch
134 P720 User Guide

b. Grasp the Wi-Fi adapter that is installed and gently pull it out of the slot.
Note: The card might fit tightly into the slot. If necessary, alternately move each side of the card a small amount until the card is removed from the slot.

Figure 140. Removing the Wi-Fi adapter
5. To remove the Wi-Fi card, do the following: a. Disconnect the two Wi-Fi antenna cables from the Wi-Fi card. b. Remove the two screws that secure the Wi-Fi card to the Wi-Fi adapter. c. Gently pull the Wi-Fi card out of the mini PCIe slot.

Figure 141. Removing the Wi-Fi card

Chapter 7. Hardware removal and installation 135

6. To install a new Wi-Fi card, do the following: a. Insert the Wi-Fi card into the mini PCIe slot on the Wi-Fi adapter. b. Install the two screws to secure the Wi-Fi card to the Wi-Fi adapter. c. Connect the two Wi-Fi antenna cables to the Wi-Fi card.
Figure 142. Installing a Wi-Fi card 7. To install the Wi-Fi adapter, install the Wi-Fi adapter into the PCIe card slot on the system board. See
"Parts on the system board" on page 8. Then, pivot the PCIe card latch and push it back in until it snaps into position.
Figure 143. Installing the Wi-Fi adapter 136 P720 User Guide

8. If the installed Wi-Fi card supports the Bluetooth function, connect a Bluetooth cable to the Wi-Fi adapter. Note: The Bluetooth cable connects the Bluetooth connector on the Wi-Fi adapter to the 15-in-1 card reader connector on the system board. See "Parts on the system board" on page 8.
9. Attach the Wi-Fi antenna cable connectors 1 to the corresponding Wi-Fi antenna connectors 2 as shown.
Figure 144. Installing the Wi-Fi antenna 10. Tighten the Wi-Fi antenna cable connectors to secure them to the rear of the computer. What to do next: · To work with another piece of hardware, go to the appropriate section. · To complete the installation or replacement, go to "Completing the parts replacement" on page 137.
Completing the parts replacement
CAUTION: After replacing a CRU, reinstall all protective covers, including the computer cover, before connecting power and operating the computer. This action is important to help prevent unexpected electrical shock and help ensure the containment of an unexpected fire that could happen under extremely rare conditions. After completing the installation or replacement for all parts, reinstall the computer cover and reconnect cables. Depending on the parts you installed or replaced, you might need to confirm the updated information in the Setup Utility program. Refer to "Using the Setup Utility program" on page 35.
Chapter 7. Hardware removal and installation 137

To reinstall the computer cover and reconnect cables to your computer, do the following: 1. Ensure that all components have been reassembled correctly and that no tools or loose screws are left inside your computer. See "Computer components" on page 7 for the locations of various components in your computer. 2. Ensure that the cables are routed correctly before reinstalling the computer cover. Keep cables clear of the hinges and sides of the computer chassis to avoid interference with reinstalling the computer cover. 3. Position the computer cover on the chassis, align the slots on both the top and the bottom of the cover with the corresponding little posts on the chassis. Note: Keep the handle on the cover latch lifted before you finish reinstalling the computer cover.
Figure 145. Positioning the computer cover
138 P720 User Guide

4. Pivot the lifted handle on the cover latch inward as shown to the closed position so that the computer cover is secured in position.
Figure 146. Reinstalling the computer cover 5. Place the computer in an upright position. 6. If there is any locking device available, lock the computer cover. See "Locking your computer" on page
29. 7. Reconnect the external cables and power cords to the corresponding connectors on the computer. See
"Hardware locations" on page 1. 8. Update the configuration of your computer if necessary. See "Using the Setup Utility program" on page
35. 9. If a newly installed hardware component does not work correctly, update the device driver. See
"Keeping your computer current" on page 28.
Chapter 7. Hardware removal and installation 139

140 P720 User Guide

Chapter 8. Getting information, help, and service
This chapter provides information about getting help and support from Lenovo.
Information resources
You can use the information in this section to access useful resources relating to your computing needs.
Accessing the user guide in various languages
To access the user guide in various languages, go to: https://support.lenovo.com
Windows help system
The Windows help system provides you with detailed information about using the Windows operating system.
Note: Using the help for Windows 10 requires an active Internet connection.
To access the Windows help system, do the following: 1. Click the Start button to open the Start menu. 2. Click Get Help.
Safety and warranty
The Safety, Warranty, and Setup Guide provided with your computer contains important safety information, product warranty terms, initial setup procedure, and legal notices. Ensure that you read and understand all safety information in the Safety, Warranty, and Setup Guide before using your computer.
In addition, read and understand "Read this first: Important safety information" on page iii before using your computer. This preface provides additional safety information that applies to topics and tasks described in this User Guide.
Lenovo Web site
The Lenovo Web site (https://www.lenovo.com) provides up-to-date information and services to help you buy, upgrade, and maintain your computer. You also can do the following: · Shop for desktop and notebook computers, monitors, projectors, upgrades, and accessories for your
computer, and special offers. · Purchase additional services, such as support for hardware, operating systems, programs, network setup
and configuration, and custom installations. · Purchase upgrades and extended hardware repair services. · Access troubleshooting and support information for your computer model and other supported products. · Find a Service Provider located near you.
Lenovo Support Web site
Technical support information is available on the Lenovo Support Web site at: https://support.lenovo.com

© Copyright Lenovo 2019, 2020

141

This Web site is updated with the latest support information such as the following: · Drivers and software · Diagnostic solutions · Product and service warranty · Product and parts details · User guides and manuals · Knowledge base and frequently asked questions · Lenovo Support phone numbers
Frequently asked questions
For the answers to frequently asked questions about your computer, go to: http://www.lenovo.com/support/faq
Help and service
This section provides information about obtaining help and service.
Calling for service
During the warranty period, you can get help and information by telephone through the Customer Support Center. For the warranty period of your computer, go to https://www.lenovo.com/warranty-status. For a list of Lenovo Support phone numbers, go to https://pcsupport.lenovo.com/supportphonelist.
Note: Phone numbers are subject to change without notice. If the number for your country or region is not provided, contact your Lenovo reseller or Lenovo marketing representative.
The following services are available during the warranty period: · Problem determination - Trained service personnel are available to assist you with determining a
hardware problem and deciding what action is necessary to fix the problem. · Hardware repair - If the problem is caused by hardware under warranty, trained service personnel are
available to provide the applicable level of service. · Engineering Change management - There might be changes that are required after a product has been
sold. Lenovo or your reseller will make selected Engineering Changes (ECs) that apply to your hardware available.
These items are not covered by the warranty: · Replacement or use of parts not manufactured for or by Lenovo or non-warranted Lenovo parts · Identification of software problem sources · Configuration of BIOS as part of an installation or upgrade · Changes, modifications, or upgrades to device drivers · Installation and maintenance of network operating systems (NOS) · Installation and maintenance of programs
If possible, be at your computer when you call. Have the following information available: · Machine type and model · Serial numbers of your hardware products · Description of the problem · Exact wording of any error messages · Hardware and software configuration information
142 P720 User Guide

Using other services
You might travel with your computer or relocate it to a country or region where the machine type for your desktop or notebook computer is sold. In such a situation, your computer might be eligible for International Warranty Service, which automatically entitles you to obtain warranty service throughout the warranty period. Service will be performed by service providers authorized to perform warranty service. Service methods and procedures vary by country, and some services might not be available in all countries. International Warranty Service is delivered through the method of service (such as depot, carry-in, or on-site service) that is provided in the servicing country. Service centers in certain countries might not be able to service all models of a particular machine type. In some countries, fees and restrictions might apply at the time of service. To determine whether your computer is eligible for International Warranty Service and to view a list of the countries or regions where service is available, go to https://support.lenovo.com. For technical assistance with the installation of or questions related to Service Packs for your preinstalled Microsoft Windows product, go to https://support.microsoft.com. You also can contact the Lenovo Customer Support Center for help. Some fees might apply.
Purchasing additional services
During and after the warranty period, you can purchase additional services. Examples of these additional services include: · Support for hardware, operating systems, and programs · Network setup and configuration services · Upgraded or extended hardware repair services · Custom installation services Service availability and service name might vary by country or region. For more information about these services, go to the Lenovo Web site at: https://www.lenovo.com
Chapter 8. Getting information, help, and service 143

144 P720 User Guide

Appendix A. System memory speed
The Intel Xeon® microprocessor families compatible with this ThinkStation computer feature an integrated memory controller, which provides the microprocessor with direct access to the system memory. Because of this design, the system memory speed will be determined by a number of factors, including the microprocessor model and the type, speed, size (capacity), and number of DIMMs installed.
Notes:
· The actual system memory speed of the memory modules varies depending on the microprocessor model. For example, your computer comes with 2666 MT/s memory modules, but the microprocessor only supports up to 2400 MT/s memory modules. Then the system memory speed will be no faster than 2400 MT/s.
· The microprocessor models supported in your computer might vary. For a list of supported microprocessor models, contact the Lenovo Customer Support Center.
Refer to the following information about the system memory modules:
· DIMM type and speed: DDR4 ECC RDIMM · DIMM operating voltage: 1.2 V · Memory frequency: 2133 MT/s · Microprocessor model:
­ Intel Xeon Bronze series ­ Intel Xeon Bronze series 2nd Generation
· DIMM type and speed: DDR4 ECC RDIMM · DIMM operating voltage: 1.2 V · Memory frequency: 2400 MT/s · Microprocessor model:
­ Intel Xeon Silver series ­ Intel Xeon Silver series 2nd Generation
· DIMM type and speed: DDR4 ECC RDIMM · DIMM operating voltage: 1.2 V · Memory frequency: 2666 MT/s · Microprocessor model:
­ Intel Xeon Platinum series ­ Intel Xeon Gold series · DIMM type and speed: DDR4 ECC RDIMM · DIMM operating voltage: 1.2 V · Memory frequency: 2933 MT/s · Microprocessor model:
­ Intel Xeon Platinum series 2nd Generation ­ Intel Xeon Gold series 2nd Generation ­ Intel Xeon W-3200 Processors

© Copyright Lenovo 2019, 2020

145

146 P720 User Guide

Appendix B. Supplemental information about the Ubuntu operating system
In limited countries or regions, Lenovo offers customers an option to order computers with the preinstalled Ubuntu® operating system.
If the Ubuntu operating system is available on your computer, read the following information before you use the computer. Ignore any information related to Windows-based programs, utilities, and Lenovo preinstalled applications in this documentation.
Accessing the Lenovo Limited Warranty This product is covered by the terms of the Lenovo Limited Warranty (LLW), version L505-0010-02 08/2011. You can view the LLW in a number of languages from the following Web site. Read the Lenovo Limited Warranty at: https://www.lenovo.com/warranty/llw_02
The LLW also is preinstalled on the computer. To access the LLW, go to the following directory:
/usr/share/doc/lenovo-doc
If you cannot view the LLW either from the Web site or from your computer, contact your local Lenovo office or reseller to obtain a printed version of the LLW.
Accessing the Ubuntu help system The Ubuntu help system provides information about how to use the Ubuntu operating system. To access the help system from the Unity, move your pointer to the Launch bar, and then click the Help icon. If you cannot find the Help icon from the Launch bar, click the Search icon, and type Help to search it.
To learn more about the Ubuntu operating system, go to: https://www.ubuntu.com
Getting support information If you need help, service, technical assistance, or more information about the Ubuntu operating system or other applications, contact the provider of the Ubuntu operating system or the provider of the application. If you need the service and support for hardware components shipped with your computer, contact Lenovo. For more information about how to contact Lenovo, refer to the User Guide and Safety, Warranty, and Setup Guide.
To access the latest User Guide and Safety, Warranty, and Setup Guide, go to: https://support.lenovo.com
Note: For information about configuring RAID in the Linux® environment, contact your Linux software provider.

© Copyright Lenovo 2019, 2020

147

148 P720 User Guide

Appendix C. Regulatory and TCO Certified information of countries and regions
The latest compliance information is available at: https://www.lenovo.com/compliance
TCO Certified
Selected models are TCO Certified and bear the TCO Certified logo.
Note: TCO Certified is an international third-party sustainability certification for IT products. For details, go to https://www.lenovo.com/us/en/compliance/tco.
Export classification notice
This product is subject to the United States Export Administration Regulations (EAR) and has an Export Classification Control Number (ECCN) of 5A992.c. It can be re-exported except to any of the embargoed countries in the EAR E1 country list.
Electronic emissions notices
Federal Communications Commission Declaration of Conformity
The following information refers to Lenovo personal computer machine types 30BA, 30BB, and 30BU.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: · Reorient or relocate the receiving antenna. · Increase the separation between the equipment and receiver. · Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. · Consult an authorized dealer or service representative for help.
Lenovo is not responsible for any radio or television interference caused by using other than specified or recommended cables and connectors or by unauthorized changes or modifications to this equipment. Unauthorized changes or modifications could void the user's authority to operate the equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Responsible Party: Lenovo (United States) Incorporated 1009 Think Place - Building One Morrisville, NC 27560 Phone Number: 919-294-5900

© Copyright Lenovo 2019, 2020

149

Industry Canada Class B emission compliance statement CAN ICES-3(B)/NMB-3(B)
European Union conformity EU contact: Lenovo (Slovakia), Landererova 12, 811 09 Bratislava, Slovakia
EMC Directive Statement: This product is in conformity with the protection requirements of EU Council EMC Directive 2014/30/EU on the approximation of the laws of the Member States relating to electromagnetic compatibility.
This product has been tested and found to comply with the limits for Class B equipment according to European Standards harmonized in the Directives in compliance. The Class B requirements for equipment are intended to offer adequate protection to broadcast services within residential environments.
Radio Equipment Directive Statement: This product is in conformity with all the requirements and essential norms that apply to EU Council Radio Equipment Directive 2014/53/EU on the approximation of the laws of the Member States relating to radio equipment. The full text of the system EU declaration of conformity and the EU wireless module declarations are available at following Internet addresses: http://www.lenovo.com/eudoc-workstations
Lenovo cannot accept responsibility for any failure to satisfy the protection requirements resulting from a non-recommended modification of the product, including the installation of option cards from other manufacturers.
German Class B compliance statement Deutschsprachiger EU Hinweis:
Hinweis für Geräte der Klasse B EU-Richtlinie zur Elektromagnetischen Verträglichkeit
Dieses Produkt entspricht den Schutzanforderungen der EU-Richtlinie 2014/30/EU zur Angleichung der Rechtsvorschriften über die elektromagnetische Verträglichkeit in den EU-Mitgliedsstaaten und hält die Grenzwerte der Klasse B der Norm gemäß Richtlinie.
Um dieses sicherzustellen, sind die Geräte wie in den Handbüchern beschrieben zu installieren und zu betreiben. Des Weiteren dürfen auch nur von der Lenovo empfohlene Kabel angeschlossen werden. Lenovo übernimmt keine Verantwortung für die Einhaltung der Schutzanforderungen, wenn das Produkt ohne Zustimmung der Lenovo verändert bzw. wenn Erweiterungskomponenten von Fremdherstellern ohne Empfehlung der Lenovo gesteckt/eingebaut werden.
Deutschland:
Einhaltung des Gesetzes über die elektromagnetische Verträglichkeit von Betriebsmitteln
Dieses Produkt entspricht dem ,,Gesetz über die elektromagnetische Verträglichkeit von Betriebsmitteln" EMVG (früher ,,Gesetz über die elektromagnetische Verträglichkeit von Geräten"). Dies ist die Umsetzung der EMV EU-Richtlinie 2014/30/EU in der Bundesrepublik Deutschland.
150 P720 User Guide

Zulassungsbescheinigung laut dem Deutschen Gesetz über die elektromagnetische Verträglichkeit von Betriebsmitteln, EMVG vom 20. Juli 2007 (früher Gesetz über die elektromagnetische Verträglichkeit von Geräten), bzw. der EMV EU Richtlinie 2014/30/EU, für Geräte der Klasse B. Dieses Gerät ist berechtigt, in Übereinstimmung mit dem Deutschen EMVG das EG-Konformitätszeichen CE - zu führen. Verantwortlich für die Konformitätserklärung nach Paragraf 5 des EMVG ist die Lenovo (Deutschland) GmbH, Meitnerstr. 9, D-70563 Stuttgart. Informationen in Hinsicht EMVG Paragraf 4 Abs. (1) 4: Das Gerät erfüllt die Schutzanforderungen nach EN 55024 und EN 55032 Klasse B. Korean wireless-radio compliance information
Japan VCCI Class B compliance statement
Japan compliance statement for products which connect to the power mains with rated current less than or equal to 20 A per phase
Japan notice for ac power cord The ac power cord shipped with your product can be used only for this specific product. Do not use the ac power cord for other devices.
Lenovo product service information for Taiwan
Keyboard and mouse compliance statement for Taiwan
Eurasian compliance mark
Brazil audio notice
Ouvir sons com mais de 85 decibéis por longos períodos pode provocar danos ao sistema auditivo.
Appendix C. Regulatory and TCO Certified information of countries and regions 151

Mexico wireless-radio compliance information
Advertencia: En Mexico la operación de este equipo estásujeta a las siguientes dos condiciones: (1) es posible que este equipo o dispositivo no cause interferencia perjudicial y (2) este equipo o dispositivo debe aceptar cualquier interferencia, incluyendo la que pueda causar su operación no deseada.
Additional regulatory information
For additional regulatory information, refer to the Regulatory Notice shipped with your computer. Depending on the configuration of your computer and the country or region where the computer was purchased, you might have received additional printed regulatory notices. All regulatory notices are available on the Lenovo Support Web site in electronic format. To access electronic copies of the documentation, go to https:// support.lenovo.com.
152 P720 User Guide

Appendix D. WEEE and recycling information of countries and regions
Lenovo encourages owners of information technology (IT) equipment to responsibly recycle their equipment when it is no longer needed. Lenovo offers various programs and services to assist equipment owners in recycling their IT products. The latest environmental information is available at: https://www.lenovo.com/ecodeclaration
Important WEEE information

The WEEE marking on Lenovo products applies to countries with WEEE and e-waste regulations (for example, the European WEEE Directive, India E-Waste Management Rules). Appliances are labeled in accordance with local regulations concerning waste electrical and electronic equipment (WEEE). These regulations determine the framework for the return and recycling of used appliances as applicable within each geography. This label is applied to various products to indicate that the product is not to be thrown away, but rather put in the established collection systems for reclaiming these end of life products.
Users of electrical and electronic equipment (EEE) with the WEEE marking must not dispose of end of life EEE as unsorted municipal waste, but use the collection framework available to them for the return, recycle, and recovery of WEEE and to minimize any potential effects of EEE on the environment and human health due to the presence of hazardous substances. Lenovo electrical and electronic equipment (EEE) may contain parts and components, which at end-of-life might qualify as hazardous waste.
EEE and waste electrical and electronic equipment (WEEE) can be delivered free of charge to the place of sale or any distributor that sells electrical and electronic equipment of the same nature and function as the used EEE or WEEE.
For additional WEEE information, go to: https://www.lenovo.com/recycling
WEEE information for Hungary Lenovo, as a producer, bears the cost incurred in connection with the fulfillment of Lenovo's obligations under Hungary Law No. 197/2014 (VIII.1.) subsections (1)-(5) of section 12.
Recycling information for Japan
Collecting and recycling a disused Lenovo computer or monitor If you are a company employee and need to dispose of a Lenovo computer or monitor that is the property of the company, you must do so in accordance with the Law for Promotion of Effective Utilization of Resources. Computers and monitors are categorized as industrial waste and should be properly disposed of by an

© Copyright Lenovo 2019, 2020

153

industrial waste disposal contractor certified by a local government. In accordance with the Law for Promotion of Effective Utilization of Resources, Lenovo Japan provides, through its PC Collecting and Recycling Services, for the collecting, reuse, and recycling of disused computers and monitors. For details, visit the Lenovo Web site at https://www.lenovo.com/recycling/japan. Pursuant to the Law for Promotion of Effective Utilization of Resources, the collecting and recycling of home-used computers and monitors by the manufacturer was begun on October 1, 2003. This service is provided free of charge for home-used computers sold after October 1, 2003. For details, visit the Lenovo Web site at https://www.lenovo.com/ recycling/japan. Disposing of Lenovo computer components Some Lenovo computer products sold in Japan may have components that contain heavy metals or other environmental sensitive substances. To properly dispose of disused components, such as a printed circuit board or drive, use the methods described above for collecting and recycling a disused computer or monitor. Disposing of disused lithium batteries from Lenovo computers A button-shaped lithium battery is installed inside your Lenovo computer to provide power to the computer clock while the computer is off or disconnected from the main power source. If you need to replace it with a new one, contact your place of purchase or contact Lenovo for service. If you need to dispose of a disused lithium battery, insulate it with vinyl tape, contact your place of purchase or an industrial-waste-disposal operator, and follow their instructions. Disposal of a lithium battery must comply with local ordinances and regulations.
Recycling information for Brazil
Declarações de Reciclagem no Brasil
Descarte de um Produto Lenovo Fora de Uso Equipamentos elétricos e eletrônicos não devem ser descartados em lixo comum, mas enviados à pontos de coleta, autorizados pelo fabricante do produto para que sejam encaminhados e processados por empresas especializadas no manuseio de resíduos industriais, devidamente certificadas pelos orgãos ambientais, de acordo com a legislação local. A Lenovo possui um canal específico para auxiliá-lo no descarte desses produtos. Caso você possua um produto Lenovo em situação de descarte, ligue para o nosso SAC ou encaminhe um e-mail para: [email protected], informando o modelo, número de série e cidade, a fim de enviarmos as instruções para o correto descarte do seu produto Lenovo.
Battery recycling information for Taiwan
154 P720 User Guide

Battery recycling information for the European Union
Notice: This mark applies only to countries within the European Union (EU). Batteries or packaging for batteries are labeled in accordance with European Directive 2006/66/EC concerning batteries and accumulators and waste batteries and accumulators. The Directive determines the framework for the return and recycling of used batteries and accumulators as applicable throughout the European Union. This label is applied to various batteries to indicate that the battery is not to be thrown away, but rather reclaimed upon end of life per this Directive. In accordance with the European Directive 2006/66/EC, batteries and accumulators are labeled to indicate that they are to be collected separately and recycled at end of life. The label on the battery may also include a chemical symbol for the metal concerned in the battery (Pb for lead, Hg for mercury, and Cd for cadmium). Users of batteries and accumulators must not dispose of batteries and accumulators as unsorted municipal waste, but use the collection framework available to customers for the return, recycling, and treatment of batteries and accumulators. Customer participation is important to minimize any potential effects of batteries and accumulators on the environment and human health due to the potential presence of hazardous substances. Before placing electrical and electronic equipment (EEE) in the waste collection stream or in waste collection facilities, the end user of equipment containing batteries and/or accumulators must remove those batteries and accumulators for separate collection.
Disposing of lithium batteries and battery packs from Lenovo products A coin-cell type lithium battery might be installed inside your Lenovo product. You can find details about the battery in the product documentation. If the battery needs to be replaced, contact your place of purchase or contact Lenovo for service. If you need to dispose of a lithium battery, insulate it with vinyl tape, contact your place of purchase or a waste-disposal operator, and follow their instructions.
Disposing of battery packs from Lenovo products Your Lenovo device might contain a lithium-ion battery pack or a nickel metal hydride battery pack. You can find details on the battery pack in the product documentation. If you need to dispose of a battery pack, insulate it with vinyl tape, contact Lenovo sales, service, or your place of purchase, or a waste-disposal operator, and follow their instructions. You also can refer to the instructions provided in the user guide for your product. For proper collection and treatment, go to: https://www.lenovo.com/environment
Appendix D. WEEE and recycling information of countries and regions 155

156 P720 User Guide

Appendix E. Restriction of Hazardous Substances (RoHS) Directive of countries and regions
The latest environmental information about Lenovo products is available at: https://www.lenovo.com/ecodeclaration European Union RoHS This Lenovo product, with included parts (cables, cords, and so on) meets the requirements of Directive 2011/65/EU on the restriction of the use of certain hazardous substances in electrical and electronic equipment ("RoHS recast" or "RoHS 2"). For more information about Lenovo worldwide compliance on RoHS, go to: https://www.lenovo.com/rohs-communication Turkish RoHS The Lenovo product meets the requirements of the Republic of Turkey Directive on the Restriction of the Use of Certain Hazardous Substances in Waste Electrical and Electronic Equipment (WEEE).
Ukraine RoHS
India RoHS RoHS compliant as per E-Waste (Management) Rules.

© Copyright Lenovo 2019, 2020

157

Mainland China RoHS Taiwan RoHS 158 P720 User Guide

Appendix F. ENERGY STAR model information
ENERGY STAR® is a joint program of the U.S. Environmental Protection Agency and the U.S. Department of Energy aimed at saving money and protecting the environment through energy efficient products and practices.
Lenovo is proud to offer products with the ENERGY STAR certified designation. Lenovo computers, if carry an ENERGY STAR mark, have been designed and tested to conform to the ENERGY STAR program requirements for computers as prescribed by the U.S. Environmental Protection Agency. For a certified computer, an ENERGY STAR mark may be affixed to the product, the product packaging, or displayed electronically on the E-label screen or the power settings interface.
By using ENERGY STAR compliant products and taking advantage of the power-management features of your computer, you reduce the consumption of electricity. Reduced electrical consumption contributes to potential financial savings, a cleaner environment, and the reduction of greenhouse gas emissions. For more information about ENERGY STAR, go to https://www.energystar.gov/.
Lenovo encourages you to make efficient use of energy an integral part of your day-to-day operations. To help in this endeavor, set the following power-management features to take effect when your computer has been inactive for a specified duration:
Table 1. Default power plan (when plugged into ac power)
· Turn off the display: After 10 minutes · Put the computer to sleep: After 25 minutes
To awaken your computer from Sleep mode, press any key on your keyboard.
To change power settings, do the following: 1. Click the Start button to open the Start menu. 2. Click Windows System  Control Panel. 3. View Control Panel by Large icons or Small icons, and then click Power Options. 4. Follow the instructions on the screen.

© Copyright Lenovo 2019, 2020

159

160 P720 User Guide

Appendix G. Notices
Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult your local Lenovo representative for information on the products and services currently available in your area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that Lenovo product, program, or service may be used. Any functionally equivalent product, program, or service that does not infringe any Lenovo intellectual property right may be used instead. However, it is the user's responsibility to evaluate and verify the operation of any other product, program, or service.
Lenovo may have patents or pending patent applications covering subject matter described in this document. The furnishing of this document does not give you any license to these patents. You can send license inquiries, in writing, to:
Lenovo (United States), Inc. 8001 Development Drive Morrisville, NC 27560 U.S.A. Attention: Lenovo Director of Licensing
LENOVO PROVIDES THIS PUBLICATION "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some jurisdictions do not allow disclaimer of express or implied warranties in certain transactions, therefore, this statement may not apply to you.
This information could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the publication. Lenovo may make improvements and/or changes in the products and/or the programs described in this publication at any time without notice.
The products described in this document are not intended for use in implantation or other life support applications where malfunction may result in injury or death to persons. The information contained in this document does not affect or change Lenovo product specifications or warranties. Nothing in this document shall operate as an express or implied license or indemnity under the intellectual property rights of Lenovo or third parties. All information contained in this document was obtained in specific environments and is presented as an illustration. The result obtained in other operating environments may vary.
Lenovo may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation to you.
Any references in this publication to non-Lenovo Web sites are provided for convenience only and do not in any manner serve as an endorsement of those Web sites. The materials at those Web sites are not part of the materials for this Lenovo product, and use of those Web sites is at your own risk.
Any performance data contained herein was determined in a controlled environment. Therefore, the result obtained in other operating environments may vary significantly. Some measurements may have been made on development-level systems and there is no guarantee that these measurements will be the same on generally available systems. Furthermore, some measurements may have been estimated through extrapolation. Actual results may vary. Users of this document should verify the applicable data for their specific environment.

© Copyright Lenovo 2019, 2020

161

162 P720 User Guide

Appendix H. Trademarks
LENOVO, LENOVO logo, THINKSTATION, THINKSTATION logo, and ThinkVantage are trademarks of Lenovo. Microsoft, Windows, and Windows Media are trademarks of the Microsoft group of companies. Intel, Thunderbolt, and Xeon are trademarks of Intel Corporation in the U.S. and/or other countries. Linux is a registered trademark of Linus Torvalds. DisplayPort and Mini DisplayPort are trademarks of the Video Electronics Standards Association. Ubuntu is a registered trademark of Canonical Ltd. USB-C is a trademark of USB Implementers Forum. All other trademarks are the property of their respective owners. © 2020 Lenovo.

© Copyright Lenovo 2019, 2020

163

164 P720 User Guide



References

www.ilovepdf.com PTC Arbortext Publishing Engine

Search Any Device: