Lenovo ThinkPad L540 User Manual page 18

2 Microphones (on some models)
The microphones capture sound and voice when used with a program capable of handling audio.
3 Power button
Use the power button to turn on the computer.
To turn off the computer, use the Start menu shutdown option on the Microsoft
system. For the Windows 8 operating system, move the cursor to the top-right or bottom-right corner of the
screen to display the charms. Then click Settings ➙ Power ➙ Shut down.
If your computer stops responding and you cannot turn it off, press and hold the power button for four
seconds or more. If the computer still is not responding, remove the ac power adapter and the battery
to reset the computer.
You also can program the power button so that by pressing the power button you can turn off the computer
or put the computer into sleep or hibernation mode. To achieve this, you need to change your power plan
settings. To access power plan settings, do the following:
• For Windows 7: Start the Power Manager program and then click the Power Plan tab. For instructions on
how to start the Power Manager program, see "Accessing Lenovo programs on the Windows 7 operating
system" on page 20.
• For Windows 8: Click the battery status icon from the Windows notification area and click More power
options. Then click Choose what the power buttons do.
4 Fingerprint reader (on some models)
Fingerprint authentication technology provides simple and secure user access by associating your fingerprint
with passwords. For more information, see "Using the fingerprint reader" on page 55.
ThinkPad pointing device
5
TrackPoint pointing stick
6 ThinkPad trackpad
The keyboard contains the Lenovo unique ThinkPad pointing devices. Pointing, selecting, and dragging are
all part of a single process that you can perform without moving your fingers from a typing position. For
more information, see "Using the ThinkPad pointing device" on page 28.
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User Guide
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Windows 7 operating