Function key Redefined key (for multimedia control) Behavior
F1 Fn + F1 Mute audio
F2 Fn + F2 Decrease volume
F3 Fn + F3 Increase volume
F4 Fn + F4 Play previous track/chapter
F5 Fn + F5 Play/Pause
F6 Fn + F6 Play next track/chapter.
F8 Fn + F8 Switch to external display
F9 Fn + F9 Search
F10 Fn + F10
Click keyboard backlight (optional).
NOTE: Non-backlight keyboards have
F10 function key without the backlight
icon and do not support toggle
keyboard backlight function.
F11 Fn + F11 Decrease brightness
F12 Fn + F12 Increase brightness
The Fn key is also used with selected keys on the keyboard to invoke other secondary functions.
Table 23. Secondary behavior
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