Dell N870P-S0 from Dell Poweredge R710 PSU Harness
thingiverse
This is a harness for Dell N870P-S0 PSUs I salvaged from some Dell Poweredge R710s. Fill out wiring as shown in picture to get PSU to turn on and emit 12V. For similar models with different pinouts, you can alter the exposed pins in the SCAD file, or remove the pin coverings. I designed this this squeeze some flattened copper pipe inbetween each 12V/GND connector, solder the 3x groups together, and then solder a bigger wire going out. I haven't tried, but this is probably hard to remove. If you have a better way to connect to the PSU, I'd love to know.
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