

What type of SSD? There are basically four types:
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2.5" SATA, looks like an old HDD
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mSATA, a PCB with two screw holes.
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M.2 SATA, a PCB with one screw hole and usually two notches.
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M 2 PCIe/NVME, a PCB with one screw hole and usually only one notch.
The latter two are physically compatible but electrically not. It just won’t work.
Sounds like they need to move to either ZIF connectors or 48V power; this kind of power over high pin counts isn’t really practical.
There’s a reason electrical codes don’t usually let you use parallel conductors below about 4AWG/60A per conductor.