Fn key combinations The following table shows the Fn key and function key combinations and their corresponding functions. The Fn key works independently of the operating system. The operating system obtains the status through the system management interface to control the system.
Key combination
Description
Fn + F3
Standby mode
Fn + F4
Suspend mode
Fn + F5
Decrease brightness
Fn + F6
Increase brightness
Fn + F7
Switch between the LCD, the external monitor, and both the LCD and external monitor.