M vs : What's the Difference?

2 standard contains variants with up to four PCIe lanes, one SATA 6 Gbs and or one USB port So it is possible to connect PCIe as well as SATA SSDs

Older laptops and Windows tablets use mSATA solid-state drives One reason it is so fast is that there is a direct connection between the motherboard and

nvme m2 ssd slot Learn to distinguish cards, including slots, keys, sizes, and types 2 NVMe options for configuration for a Precision 5510: NVMe (M

nvme in pcie slot 2 drives are “keyed” at one end so as to prevent the end-user from inserting them in an incompatible socket PCIe NVMe drives are 'M' keyed SATA ones,