At-atx?

[Hippo]

I have an old PSU from a P75 made around -95.
It has the regular molexes and stuff and where the mobo connector should be there is 2 connectors witch was connected to the old mobo.
Is this an AT PSU?

 

[Godfodda]

Yep. Don't know if there's any way to convert it, but I wouldn't count on it. It would be good for a second PSU to run fans, pumps, TECs, etc.

 

[Hippo]

Well I don't need to run fans since I watercool, I need more power to 5V and 3,3V.