I have no idea, it plugs into the printer port but it isn't seeing anything no matter which MAME I try. I've tried changing inputs, but it isn't recognized. It does seem to work, because I can press the buttons on the board and it goes into a menu of some sort. I connected all cables (molex power, vga and LPT) thinking maybe it needed a ground or something, but no matter what it doesn't recognize ANY button presses.
So short answer, don't buy a PC2JAMMA or RA-PC-2-JAMMA-BOARD or anything from Holland Computers! I contacted them several times to try to get it working and they wouldn't take it back or explain how it worked or anything. I'll just buy a JPAC.