CO2 Laser Controller Ruida kT332N For Laser Engraving Cutting Machine

KT332N Ruida controller I’ve had in my machine for two years now just upgraded but can’t really see much of a difference. Was going to keep this but it’s a shame to put it in the drawer and collect dust. The only thing I couldn’t get working was the air assist on it, but I had an external air assist anyway My machine is 500 x 300 Chinese blue Laser Thanks for looking