Lenovo ThinkPad X260 Hardware Maintenance Manual page 48

Function keys and Description
key combinations
Fn+Spacebar Controls the keyboard backlight.
There are three modes for the keyboard backlight: Off, Low, and High. Press Fn+Spacebar to
change the mode of the keyboard backlight.
Fn+B Has the same function as the Break key on a conventional keyboard.
Fn+P Has the same function as the Pause key on a conventional keyboard.
Fn+S Has the same function as the SysRq key on a conventional keyboard.
Fn+K Has the same function as the ScrLK key on a conventional keyboard.
Fn+End
Has the same function as the Insert key on a conventional keyboard.
Fn+4 Puts your computer into sleep mode. To return to normal operation, press the Fn key only.
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ThinkPad X260 Hardware Maintenance Manual