Dell PSU NPS-885AB

[NHK0]

Hi everyone,

I just recovered 4 Dell 870W PSU (NPS-885AB) from old servers in my office and i want tu use it to power GPU. I found a lot informations about the 750watt model but nothing for the 870w   .

I'd like to do the same kind of DIY as in this tutorial http://www.xodustech.com/projects/bitcoin-mining-farm but the 870w's conectors are not the same :

https://i.imgur.com/UpEhydf.jpg

https://i.imgur.com/uW6k1HW.jpg

I tried to start one of the power supplies but I created a short circuit  

Has anyone ever used this PSU to power GPUs ?

[NHK0]

Hi  cryptocoinfarmer,

Thx for your reply , i found this scheme but i'm not sure this is the same as my PSU. Because the conector is mounted in the other direction.

According to you,  if i want to start the power supply as shown on this diagram :

http://www.xodustech.com/images/bitcoinminer/psu-12.jpg

I have to connect like this :

https://imgur.com/EW9dfzt

( PS : sorry for my english it's not my native language)

[cryptocoinfarmer]

I've deleted my answer because the scheme was wrong.
Soon I will find you the right way to connecting wires.

[NHK0]

Thank you Cryptocoinfarmer,
Indeed when I tried to connect the pins as in the diagram above (assuming that the connectors were mirrored) it seems to me that I created a short circuit.
I continue my research also.

[vuli]

for P1 to P6 you can use voltmeter instrument an measure which is + or -. For booting up, try....

[NHK0]

Hi Vuli thank you for your answer,

It was my idea initially. I took my multimeter but when I tried to start the power supply I create a short circuit and now when I plug it there is an electric noise and the LED at the back does not turn on anymore. So i i'm pretty sure that i killed one of my PSU 

https://imgur.com/wpgvwkZ


 I continued to search but I can not find the wiring diagram of this model. Maybe I should post directly to the Dell forum ?

[cryptocoinfarmer]

I've looked yesterday about 4h straight for some information about this PSU. Found only similar diagram for 750w PSU but it seems the pins are different.