Acer Extensa 4220 User Manual page 53

Acer extensa 4220: user guide
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Hotkey
Icon
<Fn> + <↑>
<Fn> + <↓>
<Fn> + <→>
<Fn> + < ← >
Function
Description
Volume up
Increases the sound volume.
Volume down
Decreases the sound volume.
Brightness up
Increases the screen brightness.
Brightness down
Decreases the screen brightness.
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