I've just bought a molex adaptor and I realised that one of the holes from the adaptor doesn't have a conductor through it(it's just plastic). I've tried the adaptor anyway on my USBpro v2 and it work's. I even connected the other 3 wires without the faulty wire and it Still works. My question is.... What is the purpose of that wire and if it's safe to use the molex adaptor.? I'm talking about the black wirr near the yelow wire.