Psu and case dumb question

[Evansd]

I have a Corsair 550d case and a ocz psu which way should the fan hit the case?

Is it fan up Pointing into the case so the fan blows inside.

Fan down so it is blowing the fan down outside the case.

Most defiantly a dumb question but got to ask.

Edit: the psu sits at the bottom of this case if that makes a difference.

Thanks

 

[Evansd]

It seems as though the case is designed so that the psu fits either way. I will take your advise and have the fan down so the fan sits at the bottom of the case sucking air in.

Thanks both