Employing a more flexible physical specification, the M.2 allows different module widths and lengths, and, paired with the availability of more advanced interfacing features, makes the M.2 more suitable than mSATA in general for solid-state storage applications, particularly in smaller devices such as ultrabooks and tablets.
M.2 replaces the mSATA standard, which uses the PCI Express Mini Card physical card layout and connectors. M.2, formerly known as the Next Generation Form Factor ( NGFF), is a specification for internally mounted computer expansion cards and associated connectors.
A size comparison of an mSATA SSD (left) and an M.2 2242 SSD (right)
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