Lenovo ThinkPad X220 4298 User Manual page 24

1 Wireless WAN (auxiliary) and Wireless LAN/WiMAX (auxiliary)
4 Wireless LAN (third), Wireless WAN (main), and Wireless LAN/WiMAX (main)
The built-in antennas for the wireless communication are located at the top left and the top right portions of
your computer display.
For the specific locations of each antenna, refer to "Location of the UltraConnect wireless antennas" on
page 244.
2
Integrated camera
Some models have the integrated camera. By using this camera, you can take pictures or hold a video
conference.
For more information about how to use the camera, refer to "Using an integrated camera" on page 78.
3 Built-in microphones
The built-in microphones capture sound and voice when they are used with an application program capable
of handling audio.
5
Computer display
The high-resolution, thin-film transistor (TFT) display provides clear and brilliant text and graphics.
For details, refer to the instructions in "Changing display settings" on page 70.
6
Fingerprint reader
Some models have the fingerprint reader. The fingerprint authentication technology enables you to use your
fingerprint to start the computer and enter the ThinkPad Setup.
For details, refer to the instructions in "Using a fingerprint reader" on page 100.
7 Power switch
Use the power switch to turn on the computer. To turn off your computer, use the Start menu shutdown
options.
If you cannot turn off the computer by this method, press and hold the power switch for 2 seconds.
If your computer stops responding, and you cannot turn it off, press and hold the power switch for 4 seconds
or more. If the system is still not reset, remove the ac power adapter and the battery.
The power switch can also be programmed via Power Manager to shut down the computer or put it into
sleep (standby) or hibernation.
8 ThinkVantage button
You can use the ThinkVantage button to interrupt the startup sequence of your computer and start the Rescue
and Recovery workspace, which runs independently of the Windows operating system and is hidden from it.
Note: If your computer is a Windows 7 model, you can press ThinkVantage button to open Lenovo
ThinkVantage Toolbox.
9 PCI Express Mini Card slot for wireless LAN/WiMAX
Your computer might include a PCI Express Mini Card in the PCI Express Mini Card slot which enables
wireless LAN/WiMAX communications.
6
User Guide