Power Supply Fan Direction

[AmmoJammo]

PSU is most likely going to be the hottest part in the computer, so I'd be having it blowing air out the back of the case.

Either way will probably be ok, but as its also the highest vent in the case, having it blowing IN, isn't going to work so well when convection comes into play.

[AmmoJammo]

Brushless motors are 3 wire,usually 1 more for speed sensing. I specify 2 wire only because of this.

Chris

There is not a single 2 wire or otherwise, computer fan, that can be wired backwards to run backwards.