USB Type-A ↔ M.2 (B-key)
Compatibility check and signal path analysis
Adapter Required
These connectors are not directly compatible. An adapter or converter cable is needed.
Recommended: USB Type-A to M.2 (B-key) adapter
Signal Path
USB Type-A
Family
USB
Form Factor
Rectangular flat
Pin Count
4
Reversible
No
M.2 (B-key)
Family
Storage
Form Factor
Card-edge socket
Pin Count
67
Reversible
No
Notes
USB Type-A to M.2 (B-key): External storage enclosures and adapters bridge USB to various storage interfaces. USB 3.2 Gen 2x2 (20 Gbps) is fast enough for NVMe SSDs. The USB Type-A (USB) and M.2 (B-key) (Storage) are from different connector families.