If your function key on the 5Q keyboard is strangely lit, it's possible that the keyboard is in testing mode from our manufacturing facility. You can see this by pressing `Control`+`FN`, and the `FN` key will turn white. You can exit this mode by following these steps :
Press `Ctrl`+`FN` => `FN` lights white
Press `FN` => `FN` blinks white
Press `L`-`Ctrl` + `L`-`Alt` + `PrintScreen` (repeat this step twice)
Once you've done this, the `FN` key should have normal illumination.