Asus ZENBOOK UX31A Manual page 36

LCD/Monitor Icons (f8): Toggles between the Notebook
PC's LCD display and an external monitor in this series:
LCD Only -> CRT Only (External Monitor) -> LCD + CRT
Clone -> LCD + CRT Extend. (This function does not
work in 256 Colors, select High Color in Display Property
Settings.) NOTE: Must connect an external monitor
"before" booting up.
Crossed-out Touchpad (f9): Toggles the built-in
touchpad LOCKED (disabled) and UNLOCKED (enabled).
Locking the touchpad will prevent you from accidentally
moving the pointer while typing and is best used with an
external pointing device such as a mouse. NOTE: Selected
models have an indicator between the touchpad buttons
will light when the touchpad is UNLOCKED (enabled) and
not light when the touchpad is LOCKED (disabled).
Crossed Speaker Icons (f10): Toggles the speakers ON
and OFF (only in Windows OS)
Speaker Down Icon (f11):
Decreases the speaker volume (only in Windows OS)
Speaker Up Icon (f12):
Increases the speaker volume (only in Windows OS)
Fn+A (on selected models):
Toggles the ambient light sensor ON or OFF.
Fn+C: Toggles "Splendid Video Intelligent Technology"
function ON and OFF. This allows switching between
different display color enhancement modes in order
to improve contrast, brightness, skin tone, and color
saturation for red, green, and blue independently. You
can see the current mode through the onscreen display
(OSD).
36 Notebook PC User Manual