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.
• Illustrations in this documentation might look different from your product.
• Depending on the model, some optional accessories, features, and software programs might not be
available on your computer.
• Depending on the version of operating systems and programs, some user interface instructions might not
be applicable to your computer.
• Documentation content is subject to change without notice. Lenovo makes constant improvements on the
documentation of your computer, including this User Guide. To get the latest documentation, go to:
https://pcsupport.lenovo.com
• Canonical® makes periodic feature changes to the Ubuntu® operating system through Software Updates.
As a result, some information in this documentation might become outdated. Refer to Ubuntu resources
for the latest information.
• Blinking for three times: The computer is initially connected to power.
• On: The computer is on.
• Off: The computer is off or in hibernation mode.
• Blinking rapidly: The computer is entering sleep or hibernation mode.
• Blinking slowly: The computer is in sleep mode.
This indicator is on when the computer is turned on.
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.
, and
7. Headset connector
Connect a headset or headphones to your computer.
8. Four-digit diagnostic display
9. USB 3.2 connector Gen 2 (with
charging function)
10. USB 3.2 connector Gen 2
11. USB-C
™
(3.2 Gen 2)
connector
* for selected models
Display a four-digit error code when an issue or error is detected. You can check
the error code at
https://thinkworkstationsoftware.com/diags.
• Charge USB- compatible devices with the output voltage and current of 5 V
and 2.1 A.
• Enable you to experience higher data transfer rate when you connect USBcompatible devices, such as a USB keyboard, USB mouse, USB storage
device, or USB printer.
Enable you to experience higher data transfer rate when you connect USBcompatible devices, such as a USB keyboard, USB mouse, USB storage device,
or USB printer.
• Charge USB-C compatible devices with the output voltage and current of 5 V
and 3 A.
• Transfer data at USB 3.2 speed, up to 10 Gbps.
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P620 User Guide
Rear
1. Microphone connector
2. Audio line-out connector
3. Audio line-in connector
4. Serial connector*
5. PS/2 keyboard connector*Connect a keyboard that uses a Personal System/2 (PS/2) keyboard connector.
6. PS/2 mouse connector*
7. USB 2.0 connectors
8. USB 3.2 connectors Gen 2
Connect a microphone to your computer when you want to record sound or
interact with the computer using speech recognition software.
Send audio signals from the computer to external devices, such as powered
stereo speakers, headphones, or multimedia keyboards. To connect a stereo
system or other external recording device, connect a cable between the audio
line-in connector of the device and the audio line-out connector of the computer.
Note: If your computer has both an audio line-out connector and a headset or
headphone connector, always use the headset or headphone connector for
earphones, headphones, or a headset. The headphone connector does not
support headset microphones.
Receive audio signals from an external audio device, such as a stereo system. To
connect an external audio device, connect a cable between the audio line-out
connector of the device and the audio line-in connector of the computer.
Connect an external modem, a serial printer, or other devices that use a serial
connector.
Connect a mouse, a trackball, or other pointing devices that use a PS/2 mouse
connector.
Connect USB-compatible devices, such as a USB keyboard, USB mouse, USB
storage device, or USB printer.
Enable you to experience higher data transfer rate when you connect USBcompatible devices, such as a USB keyboard, USB mouse, USB storage device,
or USB printer.
Chapter 1. Meet your computer3
9. Ethernet connector
10. PCI-Express card area
Connect to a local area network (LAN). When the green indicator is on, the
computer is connected to a LAN. When the yellow indicator blinks, data is being
transmitted.
Install PCI-Express cards into this area to improve the operating performance of
the computer. Depending on the computer model, the connectors in this area
vary.
11. Power cord connector
12. Key-nest slots
13. Security-lock slot
Connect the power cord to your computer for power supply.
Install the key holder that comes with the computer-cover-lock key to the key-nest
slots.
Lock your computer to a desk, table, or other fixtures through a Kensington-style
cable lock.
* for selected models
System board
Note: The system board might look slightly different from the illustration.
45 PCIe 4.0 x 16 card slot 146 / 46a Memory fan connector 2
47 Rear-fan-assembly connector
38 Internal USB 2.0 connector
48 Serial port (COM) connector
6P620 User Guide
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.
1. M.2 solid-state drive slotsOne or two M.2 solid-state drives are installed in selected models.
Depending on your computer model, the following devices might be installed in
the flex bays:
• Flex module
Depending on your computer model, the following parts might be installed in
the flex module:
– 15-in-1 card reader
2. Flex bays
– Slim optical drive
• 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
– Slim optical drive
• Slim-optical-drive adapter
Chapter 1. Meet your computer7
You can install hard disk drives in the storage drive bays.
3. Storage drive bays*
4. Storage drive baysYou can install hard disk drives in the storage drive bays.
Note: If you want to install storage drives into the optional-storage-drive bays,
contact the Lenovo Customer Support Center for help.
5. PCIe slots
* for selected models
You can install compatible PCIe cards and PCIe solid-state drives in the PCIe card
slots.
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P620 User Guide
Features and specifications
• Width: 165 mm (6.5 inches)
Dimensions
Weight (without the packaging)Maximum configuration as shipped: 24 kg (52.91 lb)
• Height: 446 mm (17.6 inches)
• Depth: 455 mm (17.9 inches)
Hardware configuration
Power supply
Electrical input
Microprocessor
Memory
Storage device
Video features
1. Open the system menu from the top-right corner and click Settings.
2. Click About.
1000-watt automatic voltage-sensing power supply
• Input voltage: From 100 V ac to 240 V ac
• Input frequency: 50/60 Hz
To view the microprocessor information of your computer, enter Settings and
click About.
Up to eight double data rate 4 (DDR4) error correction code (ECC) registered dual
inline memory modules (RDIMMs)
• Hard disk drive
• M.2 solid-state drive*
• Slim optical drive*
• 15-in-1 media card*
To view the storage drive capacity of your computer, use the Disks application.
Note: The storage drive capacity indicated by the system is less than the nominal
capacity.
• PCIe x16 card slots on the system board for a discrete graphics card
• Video connectors on a discrete graphics card:
– DVI connector
– DisplayPort connector
– Mini DisplayPort connector
Audio features
The integrated audio card supports the following:
• Audio line-in connector
• Audio line-out connector
• Headset connector
• Internal speaker
• Microphone connector
Chapter 1. Meet your computer9
• Flex bays
• Storage drive bays
Expansion
Network features
• M.2 solid-state drive slots
• Memory slots
• PCI Express slots
• Bluetooth*
• Ethernet LAN
• Wireless LAN*
* for selected models
Statement on USB transfer rate
Depending on many factors such as the processing capability of the host and peripheral devices, file
attributes, and other factors related to system configuration and operating environments, the actual transfer
rate using the various USB connectors on this device will vary and will be slower than the data rate listed
below for each corresponding device.
USB deviceData rate (Gbit/s)
3.2 Gen 1 / 3.1 Gen 1
3.2 Gen 2 / 3.1 Gen 2
3.2 Gen 2 × 2
Thunderbolt 340
Thunderbolt 440
5
10
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10P620 User Guide
Chapter 2.Get started with your computer
Get started with Ubuntu Desktop
Learn the basics of Ubuntu and start working with it right away. For more information about Ubuntu, see the
Ubuntu documentation site at:
The Gnome desktop is installed by default and is designed to be simple and easy to use. Details on using
Gnome are available by launching the Help application or online at
If your computer includes a wireless LAN module, you can connect your computer to Wi-Fi® networks. The
wireless LAN module on your computer may support different standards. For some countries or regions, use
of 802.11ax may be disabled according to local regulations.
1. Open the system menu from the top-right corner and expand the Wi-Fi section of the menu.
2. Click Select Network. A list of available wireless networks is displayed.
3. Select a network available for connection. Provide required information, if needed.
Use multimedia
Use your computer for business or entertainment with the devices (such as a camera, a monitor, or
speakers).
Use audio
To enhance the audio experience, connect speakers, headphones, or a headset to the audio connector.
Change the sound settings
1. Open the system menu from the top-right corner and click Settings.
2. Click Sound.
3. Change the settings as you prefer.
Connect to an external display
Connect to a wired display
Connect your computer to a projector or a monitor to give presentations or expand your workspace.
Display mode
Go to Settings ➙ Devices ➙ Displays. Then, select a display mode of your preference.
• Join Displays: Extend the video output from your primary display to the secondary display. You can drag
and move items between two displays.
• Mirror: Display the same video output on both the primary display and the secondary display.
• Single Display: Display the video output on only one display attached.
Display arrangement
Go to Settings ➙ Devices ➙ Displays. Then, click Primary Display and select one of the displays as the
primary display.
Change display settings
Go to Settings ➙ Devices ➙ Displays. Then, you can change the settings for both the primary display and
other displays. You can change the resolution, orientation and refresh rate.
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Chapter 3.Explore your computer
Manage power
Use the information in this section to achieve the best balance between performance and power efficiency.
Set power button behaviors
You can define what the power button does according to your preference. For example, by pressing the
power button, you can turn off the computer or put the computer to sleep or hibernation mode.
To change what the power button does:
1. Open the system menu from the top-right corner and click Settings.
2. Click Power.
3. In the Suspend & Power Button section choose the power button action as you prefer.
Set the power plan
For ENERGY STAR® compliant computers, the following power plan takes effect when your computers have
been idle for a specified duration:
Table 1. Default power plan (when plugged into ac power)
• Turn off the display: After 5 minutes
• Put the computer to sleep: After 60 minutes
To awaken the computer from Sleep mode, press any key on your keyboard.
To reset the power plan to achieve the best balance between performance and power saving:
1. Open the system menu from the top-right corner and click Settings.
2. Click Power.
3. Choose or customize a power plan of your preference.
Transfer data
Quickly share your files using the built-in Bluetooth technology among devices with the same features. You
also can install a disc or media card to transfer data.
Connect to a Bluetooth-enabled device (for selected models)
You can connect all types of Bluetooth-enabled devices to your computer, such as a keyboard, a mouse, a
smartphone, or speakers. To ensure that the connection is successful, place the devices 10 meters (33 feet),
at most, from the computer.
1. Turn on Bluetooth on the computer.
a. Open the system menu from the top-right corner and then click Settings ➙ Bluetooth.
b. In the Bluetooth section enable Bluetooth with the toggle button at the top.
2. Any discoverable devices will be shown in the Devices list.
3. Select a Bluetooth device, and then follow the on-screen instructions.
Your Bluetooth device and computer will automatically connect the next time if the two devices are in range
of each other with Bluetooth turned on. You can use Bluetooth for data transfer or remote control and
communication.
Use the optical drive (for selected models)
If your computer has an optical drive, read the following information.
Install or remove a disc
1. With the computer on, press the eject button on the optical drive. The tray slides out of the drive.
2. Insert a disc into the tray or remove a disc from the tray, and then push the tray back into the drive.
Note: If the tray does not slide out of the drive when you press the eject button, turn off the computer. Then,
insert a straightened paper clip into the emergency-eject hole adjacent to the eject button. Use the
emergency eject only in an emergency.
Record a disc
1. Insert a recordable disc into the optical drive that supports recording.
2. In the Blank CD/DVD-R Disc notification that pops up at the bottom of the screen, select Open with CD/DVD Creator.
3. Follow the on-screen instructions.
Use a media card (for selected models)
If your computer has a SD-card slot, read the following information.
Install a media card
1. Locate the SD-card slot.
2. Ensure that the metal contacts on the card are facing the ones in the SD-card slot. Insert the card firmly
into the SD-card slot until it is secured in place.
Remove a media card
Attention: Before removing a media card, unmount the card from the operating system first. Otherwise, data
on the card might get corrupted or lost.
1. Launch the Files application.
2. Select the unmount icon next to the card and unmount the card from the operating system.
3. Press the card and remove it from your computer. Store the card safely for future use.
Purchase accessories
Lenovo has a number of hardware accessories and upgrades to help expand the capabilities of your
computer. Options include memory modules, storage devices, network cards, power adapters, keyboards,
mice, and more.
To shop at Lenovo, go to
14P620 User Guide
https://www.lenovo.com/accessories.
Chapter 4.Secure your computer information
Use passwords
Password types
You can set the following passwords in UEFI (Unified Extensible Firmware Interface) BIOS (Basic Input/
Output System) to prevent unauthorized access to your computer. However, you are not prompted to enter
any UEFI BIOS password when your computer resumes from sleep mode.
• 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.
• Supervisor password
Setting a supervisor 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 a
supervisor password.
When a supervisor password is set, you are prompted to enter a valid password each time you try to enter
the BIOS menu.
If both the power-on password and supervisor password are set, you can enter either password.
However, you must use your supervisor password to change any configuration settings.
• Hard disk password
Setting a hard disk password prevents unauthorized access to the data on the storage 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.
Note: After you set a hard disk password, your data on the storage drive is protected even if the storage
drive is removed from one computer and installed in another.
• System management password (for selected models)
You can enable the system management password to have the same authority as the supervisor
password to control security related features. To customize the authority of the system management
password through the UEFI BIOS menu:
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. Select Security ➙ System Management Password Access Control.
3. Follow the on-screen instructions.
If you have set both the supervisor password and the system management password, the supervisor
password overrides the system management password.
Set, change, and remove a password
Before you start, print these instructions.
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. Select Security.
3. Depending on the password type, select Set Supervisor Password, Set Power-On Password, Set System Management Password, or Hard Disk Password and press Enter.
4. Follow the on-screen instructions to set, change, or remove a password.
5. Press F10 or Fn+F10 to save the changes and exit.
You should record your passwords and store them in a safe place. If you forget the passwords, you can
contact a Lenovo-authorized service provider to have the passwords removed.
Notes:
• If the supervisor password is forgotten, it might not be removed by clearing CMOS depending on your
BIOS settings.
• If the hard disk password is forgotten, Lenovo cannot remove the password or recover data from the
storage drive.
Use 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.
Use BIOS security solutions
This section provides BIOS solutions to secure your computer and information.
Erase all storage drive data
It is recommended that you erase all storage drive data before recycling a storage drive or the computer.
To erase all storage drive data:
1. Set a hard disk password for the storage drive you will recycle. See “Use passwords” on page 15.
2. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
3. Select Security ➙ Hard Disk Password ➙ Security Erase HDD Data and press Enter.
4. Select the storage drive you will recycle and press Enter.
5. A message is displayed, prompting you to confirm the operation. Select Yes and press Enter. The
erasing process begins.
Note: During the erasing process, the power button and the keyboard are disabled.
6. After the erasing process is completed, a message is displayed, prompting you to reset the system.
Select Continue.
Note: Depending on the storage drive capacity, the erasing process will take half an hour to three hours.
7. After the resetting process is completed, one of the following will happen:
• If the data on the system storage drive is erased, you will be prompted that no operating system is
available.
• If the data on the non-system storage drive is erased, the computer restarts automatically.
Use the cover presence switch
The cover presence switch prevents the computer from logging in to the operating system when the
computer cover is not properly installed or closed.
To enable the cover presence switch connector on the system board:
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. Select Security ➙ Cover Tamper Detected and press Enter.
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3. Select Enabled and press Enter.
4. Press F10 or Fn+F10 to save the changes and exit.
When the cover presence switch connector on the system board is enabled, if the cover presence switch
detects that the computer cover is not correctly installed or closed, an error message will be displayed when
you turn on the computer. To bypass the error message and log in to the operating system:
1. Properly install or close the computer cover.
2. Enter the BIOS menu, save and then exit.
Use 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.
Use Smart USB Protection
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:
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. Select Security ➙ Smart USB Protection and press Enter.
3. Select the desired setting and press Enter.
4. Press F10 or Fn+F10 to save the changes and exit.
Chapter 4. Secure your computer information17
18P620 User Guide
Chapter 5.UEFI BIOS
This chapter provides information about configuring and updating UEFI BIOS, and clearing CMOS.
What is UEFI BIOS
Note: The operating system settings might override any similar settings in UEFI BIOS.
UEFI BIOS is the first program that the computer runs when the computer is turned on. UEFI BIOS initializes
the hardware components and loads the operating system and other programs. Your computer comes with a
setup program with which you can change UEFI BIOS settings.
Enter the BIOS menu
Restart the computer. When the logo screen is displayed, press F1 or Fn+F1 to enter the BIOS menu.
Note: If you have set BIOS passwords, enter the correct passwords when prompted. You also can select No
or press Esc to skip the password prompt and enter the BIOS menu. However, you cannot change the
system configurations that are protected by passwords.
Navigate in the BIOS interface
Attention: The default configurations are already optimized for you in boldface. Improper change of the
configurations might cause unexpected results.
Depending on your keyboard, you can navigate in the BIOS interface by pressing the following keys, or
combinations of Fn and the following keys:
F1 or Fn+F1
Esc or Fn+EscExit the submenu and return to the parent menu.
↑↓ or Fn+↑↓Locate an item.
← → or Fn+← →Select a tab.
+/– or Fn++/–Change to a higher or lower value.
EnterEnter the selected tab or submenu.
F9 or Fn+F9Restore to the default settings.
F10 or Fn+F10Save your configuration and exit.
Display the General Help screen.
Change the display language of UEFI BIOS
UEFI BIOS supports three or four display languages: English, French, simplified Chinese, and Russian (for
selected models).
You can use UEFI BIOS in the graphic mode or the text mode according to your needs.
To change the display mode of UEFI BIOS:
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. Select Main ➙ Setup Mode Select and press Enter.
3. Set the display mode as desired.
Set the system date and time
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. Select Main ➙ System Time & Date and press Enter.
3. Set the system date and time as desired.
4. Press F10 or Fn+F10 to save the changes and exit.
Change the startup sequence
If the computer does not start up from a device as expected, you can change the startup device sequence
permanently or select a temporary startup device.
Change the startup device sequence permanently
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 the computer is on or turn on the computer. 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. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
3. Select Startup, and then follow the on-screen instructions to change the startup sequence.
4. Press F10 or Fn+F10 to save the changes and exit.
Select a temporary startup device
Note: Not all discs and storage drives are bootable.
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 the computer is on or turn on the computer. 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. Restart the computer. When the logo screen is displayed, press F12 or Fn+F12.
3. Select the storage device as desired and press Enter.
If you want to change the startup device sequence permanently, select Enter Setup on Startup Device Menu
and press Enter to enter the BIOS menu.
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Change 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:
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. From the main interface, select Security ➙ Secure Boot and press Enter.
3. Depending on the operating system to be installed, do one of the following:
• To install the Windows 10 (64-bit) and many Linux operating systems, select Enabled for Secure Boot.
• To install an operating system that does not support secure boot, select Disabled for Secure Boot.
4. Press F10 or Fn+F10 to save the changes and exit.
Update UEFI BIOS
When you install a new program, device driver, or hardware component, you might need to update UEFI
BIOS. You can update the BIOS from your operating system or a flash update disc (supported only on
selected models).
Download and install the latest UEFI BIOS update package by one of the following methods:
• Using the built-in software update service:
Ubuntu software update will check the LVFS site for any firmware updates and notify you when updates
are available.
• From the Lenovo Support Web site:
1. Go to
2. Download the flash BIOS update driver for the operating system version or the ISO image version
3. Print the installation instructions and follow the instructions to update the BIOS.
https://pcsupport.lenovo.com.
(used to create a flash update disc). Then, download the installation instructions for the flash BIOS
update driver you have downloaded.
Chapter 5. UEFI BIOS21
22P620 User Guide
Chapter 6.CRU replacement
What are CRUs
Customer Replaceable Units (CRUs) are parts that can be upgraded or replaced by the customer. Lenovo
computers contain the following types of CRUs:
• Self-service CRUs: Refer to parts that can be installed or replaced easily by customer themselves or by
trained service technicians at an additional cost.
• Optional-service CRUs: Refer to parts that can be installed or replaced by customers with a greater skill
level. Trained service technicians can also provide service to install or replace the parts under the type of
warranty designated for the customer’s machine.
If you intend on installing the CRU, Lenovo will ship the CRU to you. CRU information and replacement
instructions are shipped with your product and are available from Lenovo at any time upon request. You
might be required to return the defective part that is replaced by the CRU. When return is required: (1) return
instructions, a prepaid shipping label, and a container will be included with the replacement CRU; and (2) you
might be charged for the replacement CRU if Lenovo does not receive the defective CRU within thirty (30)
days of your receipt of the replacement CRU. For full details, see the Lenovo Limited Warranty
documentation at:
https://www.lenovo.com/warranty/llw_02
Refer to the following CRU list for your computer.