M.2 (formerly known as NGFF) is a small form factor card and connector that supports applications such as WiFi, WWAN, USB, PCIe & SATA, as defined in an upcoming PCI-SIG spec.
- An M.2 card with a SATA or PCIe interface will typically be an SSD, suitable for very thin devices such as Ultrabooks or tablets
- The SATA v3.2 specification standardizes the SATA M.2 connector pin layout
- Detailed specifications will be contained in the PCI-SIG M.2 document
- M.2 cards are available in single-sided or double-sided versions
M.2 - mSATA Comparison
Where mSATA took advantage of an existing form-factor and connector, M.2 has been designed to maximize the usage of the card space, while minimizing the footprint.
| mSATA | M.2 | |
| Width (mm) | 30 | 22 |
| Length (mm) | 50.95 | 30, 42, 60, 80, 110 |
|
PCB Space - L x W (mm) |
1528.5 | 660, 924, 1320, 1760, 2420 |
