Asus Transformer Pad TF502T - Manual (Page 32)

ASUS Tablet E-Manual 
Function keys
The function keys on your ASUS mobile dock can trigger the following commands:
f1
Puts the ASUS Tablet into Sleep mode.
f4
Turns Airplane mode on or off.
NOTE: When enabled, the Airplane mode disables all wireless
connectivity.
f5
Decreases the display brightness.
f6
Increases the display brightness.
f9
Enables or disables the touchpad.
NOTE: The touchpad indicator above this key lights up when you
disable the touchpad.
f10
Turns the speaker on or off.
f11 f11
Turns the speaker volume down.
f12
Turns the speaker volume up.