How do you connect ps thermal conn to A7N8X?

[leconc]

I have an Antec SL400 that has a 3 pin ps thermal connector. It only uses 2 of the 3 pins, the outside ones. One is blue and one is black. Where I think this connects to the a7n8x, there is a jumper there. The asus manual says little, the antec manual even less. Neither tech support has had time to call me back and neither website gives any info on this. I assume the ps thermal sensor adjusts the ps fan rpm based on temp, but no info seems available. How do I connect this and what exactly does it do?

Thanks

 

[MDE]

There's two fan headers just above the AGP slot, one is for a case fan, the other for the PSU fan.