I cannot tell from the photo's which pin is which but if that's a proper SPIDIF one pin will be the + one will be GND and the third is a dead pin (NC), and black is GND by the way.
I will give it a try and see. I just wasn't sure if there was some other spidif that I could purchase. What is on the motherboard doesn't seem to want to hold the plugs very well. These wires are flemsy. Gotta shut down the system and try.
I'll let you know.