OK, look . . . the standard USB mobo connector is a 10-pin socket that handles two USB ports; one uses the odd pins on one side of the connector, the other uses the even pins. 8 pins are used electrically, 4 for each USB port. Pin 9 has no pin, pin 10 has NC (no connection).
So, having 4 wires for one USB port makes sense, though I've never personally seen a case with the wires separated.
Here's the pinout and what I would do if I were guessing. :
1: Power0 (5V) - Connect "+" here
2: Power1 (5V)
3: USB0 DX- - Connect "Port-" here
4: USB1 DX-
5: USB0 DX+ - Connect "Port+" here
6: USB1 DX+
7: GND0 - Connect "-" here
8: GND1
9: No Pin
10: Pin, but No Connection wired
OK, look . . . the standard USB mobo connector is a 10-pin socket that handles two USB ports; one uses the odd pins on one side of the connector, the other uses the even pins. 8 pins are used electrically, 4 for each USB port. Pin 9 has no pin, pin 10 has NC (no connection).
So, having 4 wires for one USB port makes sense, though I've never personally seen a case with the wires separated.
Here's the pinout and what I would do if I were guessing. :
1: Power0 (5V) - Connect "+" here
2: Power1 (5V)
3: USB0 DX- - Connect "Port-" here
4: USB1 DX-
5: USB0 DX+ - Connect "Port+" here
6: USB1 DX+
7: GND0 - Connect "-" here
8: GND1
9: No Pin
10: Pin, but No Connection wired