No, its the same PSU in the S4+, which is 3U.

First of all, sorry for the large pictures..  

Alright, opened it up and I am a bit shocked about build quality...

Spare (sharp) aluminium parts lyhing around in middle of the cables...



So I did some messuring, definately an issue with the PSU. I opened it up and and it was clear why it's not working...




I mean, really!?

Fixed the cable, no it's working... Actually things like that can be dangerous...