Pandora's box isn't a true jamma+ cart, they run buttons 4-6 on the harness instead of a kick harness. The adapter takes ground off pin 27 and routes button 6 there, this is the main problem on most cabs that keep the Pandora's boxes from being plug & play. This adapter is the deluxe unit that also allows you to connect your CPS1 or CPS2 kick harness directly into the pcb. These are a great solution for guys with a 6 button Capcom fighter that want to run these carts without altering their jamma harness.