I am trying to help a friend who wanted to hook up multiple 360 controllers, we had no problems getting one controller to work, but we can't get any more than ONE to work. Any suggestion to why it may not be working correctly? We have no problem playing steam games with more than one controller, the only problem seems to be MAME. I use only one controller, so I don't know what the problem could be.
Any suggestions, other than changing controllers.