I don't have a mobo for you, but if you need arcade controls, I have several pieces I purchased back when I had enough space and thought I'd build a MAME cabinet. It never happened, and now I'm in a place where I can't fit the cabinet.

The parts I have are a Happ 8-way joystick, six (maybe eight, I forget) Happ buttons, an Oscar spinner, and a very nice 3" trackball (I forget the manufacturer but you'll probably recognize it if you built a cab before.) I also have four Microsoft Sidewinder joysticks I was going to use to interface the controls.

If you need any of the above, PM me and I'll send some pictures. None of the items have been used, except one of the Sidewinders was taken apart for testing out the controls.