Fn+ F13 = turn on the LED for Breathing Mode / Random Breathing mode / Turn off
Fn+ Home = Turn the Left side “Control” key into a second Fn key, that means there are 2 Fn keys, one on the right and left side.
Fn+ End = Switch Capslock key with left Control key
(When you press Fn+ home then press Fn+ End, the original caplock position is Fn then left side control is capslock.)
Fn+ 5 (number pad area ) = Turn on Arrow functions, 2 is down/ 4 is left/ 6 is right / 8 is up.
Press Fn+ 5 again = go back to original factory setting.