Lenovo ThinkPad X240 User Manual page 40

• + Enables or disables the Fn Lock function.
When the Fn Lock function is disabled: The Fn Lock indicator is off. To initiate the special function
of each key, press the function keys 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 is on. To input F1–F12, press the function
keys directly. To initiate the special function of each key, press the Fn key and the corresponding
function key.
• Mutes or unmutes the speakers. When the speakers are muted, the indicator on the F1 key is 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 F2 or F3.
• Decreases the speaker volume.
• Increases the speaker volume.
• Mutes or unmutes the microphones. When the microphones are muted, the indicator on the F4
key is on.
• Darkens the display.
• Brightens the display.
• Switches the display output location between the computer display and an external monitor.
• Enables or disables the wireless features.
• For Windows 7: Opens Control Panel. For Windows 8 and Windows 8.1: Opens the Settings
charm.
• For Windows 7: Opens Windows Search. For Windows 8 and Windows 8.1: Opens the Search
charm.
• Views all the programs that you have opened.
• For Windows 7: Opens Computer. For Windows 8 and Windows 8.1: Views all the programs.
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User Guide