Screen Brightness Control
To adjust the LCD brightness press the Fn + 
key combination or the Fn + 
key combination. The changed screen brightness is displayed at the center of the screen for a moment.
Volume Control
To control the volume, press the Fn + 
key combination or the Fn + 
key combination.
You can mute the sound or cancel the mute function by clicking the Fn + 
key combination.
Numeric Key (Optional)
The numbers are printed in blue on the numeric keys.
If Num Lock is turned on by pressing the Fn + 
key combination, you can use the numeric keys to enter digits.
Other Function Keys
Application Key 
Performs the
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