I wouldn't break apart the 9 pin connector. I install only the wired holes over the case connection pin block, leaving some hanging out the back, since they don't have any wires. You may have to try moving it forward or backward. Lots of times you'll at least match the power led and power switch, which is all you really need. If you get lucky, all the case led lights will work when you power up. Don't install the connection block sideways; it should be installed in the same direction as the pin block. And all pins are low voltage, so getting it wrong won't fry your board. Just don't try this with a usb port. Then you could fry something.