Charlie Pawlak said:
If you look closely in the picture, you can see that one of the connectors are split
Get yourself a pair of needle nosed pliers or something thin enough to get in on each side and give it a bit of a squeeze, all the connectors are split on top, that one just separated at bit. If you push it together so the top two bits touch it should work just fine. I think in its present state it would bind going into the main ATX connector on the board.