M.2 (M-key) ↔ M.2 (B-key)

M.2 (M-key) to M.2 (B-key): Both are storage connectors but may use different interfaces. An adapter or enclosure may bridge them, but speed will be limited by the slower interface. The M.2 (M-key) (Storage) and M.2 (B-key) (Storage) share the same connector family.