Acer Extensa 4220 - Page 53

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English
<Fn> + <↑> Volume up Increases the sound volume.
<Fn> + <↓> Volume down Decreases the sound volume.
<Fn> + <→> Brightness up Increases the screen brightness.
<Fn> + <
←
> Brightness down Decreases the screen brightness.
Hotkey Icon Function Description