Hey all I am using an old Dell Precision R5400 which has the 750w hot swap-able power supply. Problem being, since its a dell, the ATX pin layout is different than that of a normal, standard ATX 2.0 power supply pin out.
What I found to be the Standard ATX 2.0 pinout:
I have taken a volt meter to the R5400's ATX pinout and this is what I come up with:
 Ground  Ground  +5v  +5v  +5v  +5v  +12v  +3.3vsb  -12v  Ground  Ground  Ground  +3.3vsb  +12v  +3.3v  +3.3vsb  Ground  +12v  +3.3v  +3.3v  +3.3v  +3.3v  +3.3v  +3.3vsb
Thankfully my motherboard's manual shows the pinout of it's ATX power supply connector:
So some questions are still wondering inside my head:
1) What voltage should the PSON# be? 2) What voltage should the Power OK be? 3) As you see, I do not have access to a +5Vsb from the R5400 PSU. Can I just use a normal 5vdc for that (or somehow get 3.3vsb that I do have to work with it)?
Currently this is my pin-out for my new connector from the R5400 connector to the motherboard:
So do you see anything wrong with the above? Just making sure as I do not want to fry a $500+ server motherboard over one wrong pin.