Acer Aspire 5540 User Manual page 54

36
Hotkey Icon
<Fn> + <↑>
<Fn> + <↓>
<Fn> + <→>
<Fn> + < ← >
Function
Volume up
Volume down
Brightness up
Brightness down
Description
Increases the sound volume.
Decreases the sound volume.
Increases the screen brightness.
Decreases the screen brightness.