Basically what you see here is to trick the psu into thinking it’s plugged into a mobo so it will send power to the gpu.
We also have to turn the external psu on at the same time the t610 boots.
Hey, I wanted to thank everyone here for all the info, a friend and i stumbled into a Poweredge T610 at a scrapyard for 25 bucks and we wondered if we could turn it into a gaming pc. This thread was central to making it work and we did in the end manage to get a 2070 super working great on it...