Samsung ATIV Book NP680Z5EX01US User Manual page 53

Keyboard
Chapter 3.
52
Using the computer
Shortcut Keys Name Function
Volume Control Controls the volume.
Keyboard Backlight
Controls the brightness of the keyboard backlight. This function is only available for models
Brightness Control
that support the keyboard backlight feature.
(Optional)
Silent Mode Reduces the Fan noise so that users can use the computer without hearing noise.
Turns all wireless network devices on or off.
or
Airplane Mode
(Only for models with a wireless network device.)