I don't have a link to the datasheet, but here is a link to the specs for the board.http://www.hobbycnc.com/products/hobbycnc-pro-chopper-driver-board-kits/
and the motors:http://www.hobbycnc.com/products/stepper-motors/
the plug is a 25 pin male rs-232
the board is meant to be used with step/direction software like mach3, which I have but my pc died and so here I am. I would like to us something like GRBL.
Chagrin, I thought about cutting the plug off, but I'm not sure if I would be able to differentiate the wires inside. A shell seems like a pretty good solution. It's just a question of routing pwm signals on 6 pins(x-y-z) isn't it?