I want to transfer some internal peripherals (Wifi card, RF receiver) from my current mo-bo to a new one. Upon inspection it turned out they all have 4-pin internal USB connectors, connected to the board of the card-reader. So the card-reader acts like an USB hub for these devices.
My new mo-bo has no 4-pin internal USB connections, so I tried plugging in the connector onto the right-most part of a normal (9 pin) USB header. This should work in theory, and I made sure the wire colors (red/green/white/black) match the pins, but none of the peripherals work. Some result in 'Unknown device' in Device Manager, and others are not even detected.
Is there a logical reason why the above doesnt work?
EDIT: I just hooked them up on my old mo-bo again, and now they don't function there anymore. So I must have damaged the devices by connecting them in reversed pin order on the new mo-bo. When the connector is upside down, ground and power pins are swapped which must have damaged them.
So this explains why Windows doesnt detect them, and everyone trying the same: be very carefull with connecting internal USB cables!