Dell DH1485E-S1 1,5kW power supply from disk array pinout?

[RayeR]

Hi, please anyone would know the pinout of this Dell PSU class? I couldn't find it yet. It seems to be used in disk arrays like SC7020, SC5020, SCV3020...
Here's a photo of the connector:
https://i.ebayimg.com/images/g/4OgAAOSw4xVkJ5RD/s-l1600.jpg

After connecting power cord a green LED light on and waiting for some power on signal. I measured this voltages at some pins: 3.3V, 12V and -2.3V...