PSU Fan Direction?

[kyomagi]

So my question is this. Which way does the PSU fan face? I have a vent on the bottom of my case so i assumed it was that way, but the holes allign better with the fan up

 

[Dark Lord of Tech]

So my question is this. Which way does the PSU fan face? I have a vent on the bottom of my case so i assumed it was that way, but the holes allign better with the fan up

With a vent always face down.

 

[PhatLloyd]

Mine is with the fan pulling air from the case facing upwards.