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How to use the function (Fn) keys on the keyboard - ThinkPad X20, X21, X22, X23, X24

The following table shows what each function key (Fn) key on your keyboard is for and how to use them.


  • The Fn key works independently from the operating system.

Key CombinationResult
Fn + F1Reserved.
Fn + F2Reserved.
Fn + F3Standby mode.
Fn + F4Suspend mode.
Fn + F5Reserved.
Fn + F6Reserved.
Fn + F7Switch between the LCD, the external monitor, and both the LCD and external monitor.
Fn + F8Reserved.
Fn + F9Reserved.
Fn + F10Reserved.
Fn + F11Reserved.
Fn + F12Hibernation mode.
Fn + PgUpThinkLight On/Off.
Fn + HomeThe LCD becomes brighter.
Fn + EndThe LCD becomes less bright.

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Document ID : HT036821
Legacy Document ID : MIGR-4NVTHP
Last Updated :
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