About this guide • This guide applies to Lenovo product model(s) listed below. Illustrations in this guide may look slightly different from your product model. Model name Machine type (MT) ThinkBook 15p G2 ITH 21B1 ThinkBook 15p G2 ITH Da 21B1 •...
Base 1. Wireless antennas Send and receive radio waves for the built-in wireless LAN (local area network) and Bluetooth module. Notes: • The antennas are not visible from the outside of the computer. • If the location of the antennas is close to the user’s body (< 20 cm), you can find the Specific Absorption Rate (SAR) values in the Setup Guide that comes with your computer.
Left 1. Power connector Connect to power with the included power cord and ac power adapter. 2. Charging light Indicate whether the computer is connected to ac power. • Solid white: Connected to ac power; battery capacity 91%–100% • Solid amber: Connected to ac power; battery capacity 1%–90% •...
You are responsible for evaluating, selecting, and implementing the locking device and security feature. Lenovo makes no comments, judgments, or warranties about the function, quality, or performance of the locking device and security feature. Cable locks for your product are available from Lenovo at https://smartfind.lenovo.com/...
Bottom 1. Ventilation slots (inlet) Maintain the incoming airflow to dissipate internal heat. Note: Do not block the ventilation slots. Otherwise, the computer might overheat. 2. Speakers Produce sound. Chapter 1 Meet your computer...
Features and specifications Dimensions • Width: 359 mm (14.13 inches) • Depth: 249.5 mm (9.82 inches) • Thickness: 20.2 mm (0.79 inches) ac power adapter • Input: 100 V ac–240 V ac, 50 Hz–60 Hz • Output: 20 V dc, 6.75 A •...
Connectors and slots • Power connector • Combo audio jack • Ethernet connector • USB Type-A connector × 2 (with Always-On function) – Power output up to 5 V and 1.5 A • USB-C (Thunderbolt 4 enabled) connector – Power input up to 100 W using the included power adapter –...
Operating environment Maximum altitude (without pressurization) 3048 m (10 000 ft) Temperature • At altitudes up to 2438 m (8000 ft) – Operating: 5°C to 35°C (41°F to 95°F) – Storage: 5°C to 43°C (41°F to 109°F) • At altitudes above 2438 m (8000 ft) –...
If night light mode is turned on, you can adjust the color temperature of the Night light temperature screen. Note: Selected Lenovo computers are low blue light certified. These computers are tested with night light turned on and color temperature set to the default value of 50. Windows...
To open it, type its name in the Windows Search box and select the matched result. If neither of the apps is pre-installed, you may install one on your own. Lenovo Vantage is available for download free of charge from the Microsoft Store.
Notes: • Supported on select versions of Microsoft Teams. • Install Microsoft Teams manually. Open Lenovo Vantage, Lenovo PC Manager, or an app launch bar. Open the Windows Calculator app. Open the Windows Snip Tool app. Play or pause playback of media.
+ ESC. Numeric keypad Some Lenovo computers includes a dedicated numeric keypad on the far right of the keyboard. The keypad is used for entering numbers and operators quickly. Press the NumLock key to enable or disable the numeric keypad.
10°C (50°F) and 35°C (95°F). Note: You can check the battery temperature in Lenovo Vantage or Lenovo PC Manager. To maximize the life of the battery, once the battery is fully charged, it must discharge to 94% or lower before it will be allowed to recharge again.
Table 3. Maximum output power of a USB-C port and its capability of charging the computer Maximum output power of a USB-C port Capability 20 V, 4.75 A and 20 V, 5 A Capable of charging the computer 20 V, 2.25 A and 20 V, 3.25 A Capable of charging the computer in sleep, hibernation, or powered-off state Less than 20 V, 2.25 A...
Follow on-screen instructions to change the order of devices under Boot Priority Order. Note: You can also change startup sequence temporarily without opening the setup utility. To do so, start the computer. When the Lenovo logo appears, press F12 (or Fn + F12) repeatedly. Set passwords in UEFI/BIOS setup utility This section introduces the types of passwords that you can set in the UEFI (Unified Extensible Firmware Interface) or BIOS (Basic Input/Output System) setup utility.
Attention: If you forget the administrator password, a Lenovo authorized service personnel cannot reset your password. You must take your computer to a Lenovo authorized service personnel to have the system board replaced. Proof of purchase is required and a fee will be charged for parts and service.
Lenovo authorized service personnel cannot reset your password or recover data from the hard disk. You must take your computer to a Lenovo authorized service personnel to have the hard disk drive replaced. Proof of purchase is required and a fee will be charged for parts and service.
Page 24
To change or remove master password, select Change Master Password and press Enter. Note: If you remove the master hard disk password, the user hard disk password is also removed. To change user password, select Change User Password and press Enter. Note: The user hard disk password cannot be removed separately.
Do not try to drain out the liquid by turning over the computer. If your computer has keyboard drainage holes on the bottom, the liquid will be drained out through the holes. • Lenovo Vantage or Lenovo PC Manager Where can I get the latest device drivers and UEFI/BIOS? •...
If you intend to install a CRU, Lenovo will ship the CRU to you. 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;...
Call Lenovo If you have tried to correct the problem yourself and still need help, you can call Lenovo Customer Support Center. Before you contact Lenovo Record product information and problem details before you contact Lenovo.
• Lenovo hardware repair - If the problem is determined to be caused by Lenovo hardware under warranty, trained service personnel are available to provide the applicable level of service.
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.
Page 30
Actual results may vary. Users of this document should verify the applicable data for their specific environment. This document is copyrighted by Lenovo and is not covered by any open source license, including any Linux agreement(s) which may accompany software included with this product. Lenovo may update this document at any time without notice.