Yes I bought a IDC26 Pin to IDC26 Pin ribbon cable to go from the C83 to my 3 axis board. Tonight I was trying to run Cut a Circle g code from Mach3 G code Folder and every time the Z axis went down on the Mach3 display my Z axis stepper clicked. I changed that stepper velocity/acceleration then I didn't even get a click any more. I am not sure if I should do any input/output pin settings in Configuration or not. I enabled X, Y, Z and A in Configuration. That shows Step and Dir pin numbers. 2 and 6 outputs are X, 3 and 7 outputs are Y, 4 and 8 are Z and 5 & 9 are A. I added a Single Axis board for my A axis (rotary). Just not sure what to do. Before I got this Windows 10 Computer and the UC100 I had an older computer with DB25 parallel port and used DB25 cable to the Axis board and all worked well. That is why I think I am missing something in setting UC100/Mach3 configuration....or something.