This is an optional player 3 and 4 connection wiring pack for the Ultimate I/O Interface. It makes wiring up player 3 and 4 very easy. Note that trackball/Spinner are not supported when this is used.
4.8mm - This size crimp is mainly used for standard arcade buttons E.g. Happ, IL & Classic buttons
4.8mm/2.8mm - This option allows you to use standard joysticks (Happ, IL etc...) with Japanese buttons (Sanwa or Seimitsu)
* Wiring pack for player 3 & 4
* Connects directly to I-PAC Ultimate
* Trackball & spinner are NOT supported when connecting player 3 & 4 wiring to the I-PAC Ultimate