Reference

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.

Combination/Feature	Function
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 + Scr Lk (Scroll Lock)	Works differently depending on the software you use. Refer to the help file included with the software for more information.
Fn + Pause (Pause)	Works differently depending on the software you use. Refer to the help file included with the software for more information.
Fn + Break (Break)	Works differently depending on the software you use. Refer to the help file included with the software for more information.
Fn + Pg Up (Page Up)	Goes to the previous page.
Fn + End (End)	Moves the cursor to the end of a line or page.
Fn + Pg Dn (Page Down)	Goes to the next page.
Fn + Home (Home)	Moves the cursor to the top of a line or page.
Fn + (E)	Ejects a disc from the optical disc drive.