Correct, I have an M.2 drive connected through an adapter to a pci-e slot. I'll try swapping slots and if that doesn't work, I'll try try a new adapter...and if that doesn't work, I'll burn it to the ground (buy a new SSD).
Wait, if I'm seeing UDMA errors and they're connected through HBA cards, could these all be related? If so, what could be the cause?