As the key positions of b and m are slightly different the m.
M key type 2242 2260 2280.
B m and b 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.
B m or b m while a socket can only have one key.
A b keying pins 12 19 gives pci express ssds up to 2x lanes of bandwidth while a m keying pins 59 66 provides pci express ssds with.
M 2 replaces the msata standard which uses the pci express mini card physical card layout and connectors.
You will find the key type labeled on or near the edge connector or gold fingers of the ssd.
Currently an m 2 ssd has either one of three key types.
M 2 formerly known as the next generation form factor ngff is a specification for internally mounted computer expansion cards and associated connectors.
Extended to 4 x m 2 internal connectors socket 3 m key type 2242 2260 2280 22110 pcie x4 ssd support support for raid 0 raid 1 and raid 10 supported raid levels vary by platform.
Employing a more flexible physical specification the m 2 allows different module widths and lengths and paired with the.
Each key exposes a different set of interfaces to each card m 2 can connect directly to the pci express bus but different pins can be used to connect to the usb 2 0 and 3 0 buses sata iii.