Combinations and Functions with the Fn Key
Press and hold down the Fn key and another key simultaneously to perform a keyboard shortcut action.
For example, to adjust the LCD brightness: Fn+F5 → Press and hold down the Fn key, then press the F5 key.
Some keyboard functions can only be used while Windows is running.
Fn + 
/ 
(F5/F6)
Press the button repeatedly to adjust the LCD brightness of your computer screen. [Details]
To decrease lighting intensity, press the Fn+F5 keys.
To increase lighting intensity, press the Fn+F6 keys.
Fn + 
/ 
(F9/F10)
Changes the size of an image or a document displayed on the running software.
To zoom out, press the Fn+F9 keys.
To zoom out, press the Fn+F9 keys.
To zoom in, press the Fn+F10 keys.
This function may not be available depending on the software you use.
Fn + Scr Lk (Scroll Lock)
Works differently depending on the software you use. Refer to the help file included with the software for more information.