M.2 connector key supporting selected storage and communication devices.

Physical housing for multiple storage devices.

Smaller motherboard form factor derived from ATX.

M.2 key commonly used for PCIe NVMe storage.

External enclosure holding multiple storage drives.

Compact motherboard form factor measuring about 170 × 170 mm.

M.2 key commonly used for wireless adapters.

Collection of storage devices operating as a system.

Oversized motherboard form factor for workstation systems.

M.2 key used for certain wireless and specialized devices.