Hi everyone. Sorry if I get involved in this discussion but it's a similar problem. They gave me a motherboard/processor/ram that was supposed to be from this Z4 G4. Unfortunately I can't test it due to the usual 18pin power supply problem. I'm considering buying a 24 to 18 pin adapter, the only doubt I have is: the motherboard also has another 12 pin input, do I necessarily have to connect this too to make it work? Can someone detach this second PIN and tell me if it still works? In my opinion an adapter cable is also the solution to the problem of this thread, with little expense try a standard power supply and you don't have to waste hours and hours in testing.