How to Enable Your Keyboard Backlight in Windows 10
https://www.techjunkie.com/enable-keyboard-backlight-windows-10/
WebJun 16, 2023 · To turn on or off the backlight, press Fn + Spacebar on the keyboard. The keyboard backlight has three modes: Off, Low, High. Use Fn + Spacebar to change the modes of the keyboard backlight. Select ThinkPad R, T, X, and Z-series laptops have the ThinkLight as shown below.
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