CommentStreams:F2321bdac0bdc1d8faa3255a67d70159

So your proberbly trying to use an NVME or 3DNAND SSD? The only one I got to work was an M and B keyed SSSD from WD in the Green product line, this is because the NGFF whilf M.2 and keyed the same only uses ACHI, afaik, ACHI only runs SATA (ACHI mode) and 3DNand (WD Blue) or NVMe (Samsung/Kingston et al) is not compatiable with the board, they now sell an NVME product so I would return this one and get that if your still in the RMA window. It is worth noting the limitation of the board is its ACHI design not being able to use UEFI which NVME, and iirc 3DNand require to know wth is going on!