no no no no, yes you are right about the 3 plugs, leaving one open, 4 slots total. im saying saying that the plug left open(with no wires) is the one i need to plug into not the one with the wires coming out. look at the pinout and you will see 3 good size slots and one smaller slot, i need to plug into this smaller slot but it has not wires to it. ill post pics