Question: are all nvme m key?
Answer: The M. 2 specification identifies 12 key IDs on the module card and socket interface but M. ... 2 SATA SSDs are B+M-keyed (can fit in sockets for B-keyed and M-keyed modules), while M. 2 NVMe SSDs for PCIe 3.0 x4 lane are M-keyed.