ThinkPad E550, User Manual

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• : Locks operating system
• : Opens the default browser
• : Opens Computer
2 Numeric keypad
You can use this numeric keypad to input numbers quickly.
3 Windows key
For Windows 7: Press the Windows key to open the Start menu.
For Windows 8.1: Press the Windows key to switch between the current workspace and the Start screen.
For information about using the Windows key with other keys, refer to the help information system of the
Windows operating system.
4 Function keys
• + : Enables or disables the Fn Lock function.
When the Fn Lock function is disabled : The Fn Lock indicator is off (default mode). To initiate the
special function printed as an icon on each key, press the function key directly. To input F1-F12, press
the Fn key and the corresponding function key.
When the Fn Lock function is enabled : The Fn Lock indicator turns on. To input F1-F12, press the
function keys directly. To initiate the special function printed as an icon on each key, press the Fn key
and the corresponding function key.
Note: Alternatively, you also can disable or enable the Fn lock function in the Keyboard Properties
window. See “Personalized keyboard” on page 51.
• : Mutes or unmutes the speakers. When the speakers are muted, the speaker-mute indicator turns
on.
If you mute the sound and turn off your computer, the sound will remain muted when you turn on your
computer again. To turn on the sound, press F1, F2, or F3.
• : Decreases the speaker volume.
• : Increases the speaker volume.
• : Mutes or unmutes the microphones. When the microphones are muted, the microphone-mute
indicator turns on.
• : Darkens the display.
• : Brightens the display.
You can temporarily change the computer display brightness by pressing the two keys. To change the
default brightness level, right-click the battery-status icon in the Windows notification area. Then click
Adjust screen brightness and make changes as desired.
• : Switches the display output location between the computer display and an external monitor. For
more information, refer to “Using an external display” on page 38.
Note: To switch between the computer display and an external monitor, the P key combination
also is available.
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User Guide