The reason why I need that is because I have a total of 46 LED outputs needed and the IPAC Ultimate I/O can only handle 32 per board. 7 buttons on P1 and P2 = 14, P3 and P4 4 each x2 = 8, each joystick needs 1 each x4 = 4, trackball needs 1, 2 buttons above the trackball, 3 function buttons, START, EXIT, PAUSE, start and coin buttons for each player, 2 a piece = 8, 5 pinball buttons(left flipper, right flipper, plunger, left tilt, right tilt) = 5, and 1 cabinet LED for a strip underneath = 46. Originally i left out the start buttons, but once i passed the threshold of 32 and knew I needed another board, i said F it and filled in the gaps of other places i could use them.