I got the one like James and it is plug n play for the basic XY buttons. I posted a video for YouTube that shows you how to modify the buttons OR you can just download a premade screen set from the link and add it to the Mach3 directory and then switching the screen set in Mach3. It’s nice to have a hand control that you can change feed rates, jog rates and an E-stop with the push of a button.