How can I turn off the backlight to save power? Miguel August 15, 2024 03:15 Updated Press the fn+light/fn+tab button to turn the backlight off / on. Related articles How can I lock the light effect? How to disable Auto Sleep Mode? Why does my keyboard suddenly not light up? If I turn off automatic sleep mode, do I have to turn off the keyboard (by switch) every time I turn off my PC? Keychron Q2 User Manual