I bought this cable to expand my connectivity to 9+ GPUs. This cable helps keep the power supplies in sync so they start at the same time. I've tried many tricks but the cable method is the only one that works. I would recommend this cable. It's not that expensive, but it works pretty well. However, I have to warn you that connecting 24-pin ATX cables from PSUs and then to the motherboard is tricky as hell. Take your time and be careful not to pull or bend the cable pins. Much luck!
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