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Fn key combinations
The following table shows the function of each combination
of Fn with a function key.
The Fn key works independently from the operating
system.
Key combination Description
Fn + F1 Reserved.
Fn + F2 Reserved.
Fn + F3 Turn off the LCD display, leaving the
screen blank. To turn the LCD display on
again, press any key or the TrackPoint
stick.
Fn + F4 Turn standby mode on. To return to
normal operation, press the Fn key.
Fn + F5 Reserved.
Fn + F6 Reserved.
Fn + F7 Switch between the LCD and an external
monitor.
Fn + F8 Turn screen expansion on or off. (There is
no symbol on the key.)
Fn + F9 Reserved.
Fn + F10 Reserved.
Fn + F11 Reserved.
Fn + F12 Turn hibernation mode on.
Fn + PgUp Turn the ThinkLight on or off.
Fn + Home The LCD becomes brighter.
Fn + End The LCD becomes less bright.
Fn + Insert Audio volume becomes bigger.
Fn + Delete Audio volume becomes smaller.
Fn + Backspace Mute.
Product overview
40 ThinkPad A21e