Inlet and outlet?

[R3ZAA]

Hey guys!

I recently purchased a XPSC bay reservoir, however I have no idea which hole is the inlet and which is the outlet.

Please help!

 

[ur6beersaway]

OUTLET=top/middle INLET=right/lower

 

[R3ZAA]

OUTLET=top/middle INLET=right/lower

Thank you very much!