M 2 Ssd Key Types

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M 2 ssd key types.

To help our customers understand the nuances of m 2 drives we decided to publish this overview of m 2 ssds. As the key positions of b and m are slightly different the m. The m 2 specification identifies 12 key ids on the module card and socket interface but m 2 ssds typically use three common keys. The common ones for ssds are b and m.

M 2 connectors have different keys. An m 2 ssd is keyed to prevent insertion of a card connector male to an incompatible socket female on the host. Size and capacity are two of the m 2 ssd form factor s greatest benefits. In a laptop for example an m 2 ssd takes up far less space and uses much less power than a standard sata or sas interface solid state drive.

B is 2x pci and a lot of oem drives are b m keyed. M 2 replaces the msata standard which uses the pci express mini card physical card layout and connectors. Some motherboards are flexible offering mounting holes for the retention screw at some or all of these intervals. Most m 2 wireless cards support both a and e key slots.

M keyed m 2 ssds 5. Note that b keyed m 2 ssds have a different number of pins at the edge 6 vs. M 2 ssd s using the pcie bus are faster than m 2 ssd s using a sata bus. 22 millimeters wide by 110 millimeters long.

M is 4x pci and what you ll find on nvme drives. Ssd can only be installed one way. M 2 is a new form of connectivity that allows a ssd to connect directly to the pci e bus allowing for theoretical speeds as high as 2gb s. B m or b m while a socket can only have one key.

The different key types are often labeled on or near the edge connector or gold fingers of the m 2 ssd and also on the m 2 socket. The pcie bus is faster than a sata bus and an m key ssd is faster than a b key ssd. Ssd using the sata bus run at sata speeds regardless of form factor. M 2 m key ssd s using the pcie bus are faster than m 2 b key ssd s using the pcie bus.

This asymmetrical layout prevents users from reversing the m 2 ssds and attempting to plug a b keyed m 2 ssd. Nvme sata m 2 download the infographic nvme non volatile memory express is a communications interface and driver that defines a command set and feature set for pcie based ssds with the goals of increased and efficient performance and interoperability on a broad range of enterprise and client systems. Employing a more flexible physical specification the m 2 allows different module widths and lengths and paired with the. M 2 formerly known as the next generation form factor ngff is a specification for internally mounted computer expansion cards and associated connectors.

However m 2 drives are complicated in that they allow for a variety of physical dimensions connectors and even multiple logical interfaces. Currently an m 2 ssd has either one of three key types. 22 millimeters wide by 80 millimeters long.