heh, I plugged a normal FOP32 into my ASUS P5A, and now: no more fan headers :-(
no warrenty, or anything, so I just had to strip the wires and patch em to the power supply. works like a charm!
btw, I recommend if at all possible to get a good 80 mm fan to put on, just so that you can get that high CFM rate without the extreme noise. I have an AC 120 mm fan that blows like mad (it's pretty thick) but only adds a bit to the overall noise of the computer. the fan on my FOP32 adds more sound then that 120mm fan.