Can the auxiliary power connector be safely disconnected from my motherboard without causing any problems? I have a Dell GX520 mini tower that has noisy coil whine in the power supply unit, but only when the computer is off. I'm guessing that it's the auxiliary power that keeps feeding power into the power supply when everything is turned off? If it can be safely disconnected, would I just unplug the 12v 4-pin connector to disable auxiliary power? Thanks for your help!