hey macro... I have a question about this article because I may have a use for it. I am planing a project that would make perfect use for this... I am planning on gutting a USB keyboard and making a new housing out of acrylic. In the new housing, I plan to include: the keyboard assembly (duh), a powered usb hub, and perhaps some LED's or EL wire... The keyboard itself will use one of the 4 ports on the hub and I can use the remaining three to drive my optical mouse and my usb scanner and joystick/gamepad or whatever so I don't have to keep digging under my desk to connect and reconnect usb devices. So, going to the pc from the new keyboard I will have the A/B cable going from the hub to a USB on my case, the power to the hub (5V), and power to the EL wire inverter (12V?). Ideally, I would sheath all these cables so it is clean and I don't have three separate wires leading from my keyboard to my PC. First, I may be under a misunderstanding on molex pinouts.. it is my understanding that one line is 5v, one is 7v and the others are ground (overal delivering 12v total) but I could be wrong. Looking at your article, you have two connectors on yellow and the third on red... does that mean that two of them are of the 7v variety and the other is 5v (or the other way around)? Obviously, if I need 5v for the hub and 12v for the glow wire, then I need to wire my sockets accordingly... could you give an electronic noob a hand? I know this is long winded but I figured I needed to give you the whole picture for you to easily answer my delima  upon more investigation, I have learned that yellow is 12v and red is 5v. Your wiring makes more sense to me now. I understand why you have the yellow split into two and the yellow's cooresponding ground split to go with those sockets. I guess I was confused by the 7v trick some people use on fans. So I guess I make sure I use the correct ground with the correct positive rail and I am golden. So your end result was one 5v socket and two 12v's?