I'm aware that using the fn+f3 shortcut lowers the backlight. turn off your computer by shutting it down and take out the power cable.Are you facing problems on turning on the asus keyboard backlight? Asus uses fn + f4 or f5 to control the keyboard backlight. Changing the color of keyboard backlight in your asus tuf laptop Please check the f3 and f4 keys on your asus notebook keyboard to see if you can find the backlight keyboard symbols on the keys. Click on the asus button on your keyboard to activate the gaming center on your. How To Turn On Off Rgb Keyboard Backlight In Asus Tuf Rog Gaming Laptops 2021 from There are 5 levels of brightness and an off setting. Hello, i own a fx503vm asus gaming laptop running linux mint 19 and i've been trying to turn off the keyboard backlight with fn key + down arrow (as … As reported by some users, they couldn't turn on the keyboard backlight after updating their operating system. There are 5 levels of brightness and an off setting. Hold the alt key down and use the screen brightness buttons to adjust the keyboard lighting.