background:<BR>So I recently got a cheap proliant (like $40 cheap) off ebay, and I'm using it as a file server. I can't fit all my drives in the case (it's a 1U) so I am running it without the case.

I've been wiring up some standard 80mm and 120mm fans directly to a 9v power supply. The 80mm were marked red, black and yellow but the larger cheap 120mm fans I got (mistake) are all black and I need ...