Asus PRO5LJV Manual page 42

Mute Key
Press this key to turn off the audio volume.
Volume Down Key
Press this key to decrease the audio volume.
Volume Up Key
Press this key to increase the audio volume.
CD Play/Pause
During CD stop, begins CD play.
During CD play, pauses CD play.
Power Switch
The power switch turns ON and OFF the Notebook PC or putting
the Notebook PC into sleep or hibernation modes. Actual
behavior of the power switch can be customized in Windows
Control Panel "Power Options."
42 Notebook PC User Manual