Using The Keyboard; Function Keys - Asus n551 E-Manual

Using the keyboard

Function keys

The function keys on your Notebook PC's keyboard can trigger the
following commands:
38
Puts the Notebook PC into Sleep mode
Turns Airplane mode on or off
NOTE: When enabled, the Airplane mode disables
all wireless connectivity.
Decreases display brightness
Increases display brightness
Turns the display panel on or off
Toggles the display mode
NOTE: Ensure that the second display is connected
to your Notebook PC.
Notebook PC E-Manual