Recently bought a rig, trying to get a second server PSU linked up but can’t get my head around it

Hey guys,

Recently bought a rig and have been slowly adding to it, it’s now come to the point where I need to add another PSU. I currently have 2x HSTNS-PL11 1200W and 2 breakout boards, [this one here](


The one currently working and in my rig seen [here](, and from what I gather it goes from the server PSU which is powering the GPUs, into the smaller PSU that powers the motherboard (i believe so both turn on at same time?). I spoke to the buyer who said I will just need a molex to a smaller 4 pin adapter, connect the 4pin to the “Main Detection Port” and the molex [pictured here]( but for the life of me I cannot find this cable that looks right – I tried contacting the sellers of the PSUs/breakout boards but no response, so I think maybe I am totally misunderstanding? Has anyone any idea where I am going wrong?

Thanks in advance for any help

What do you think?

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