M vs : What's the Difference?

m 2 slot types   Dan m2 slot mainboard

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 How

Two types of SSD Note: SSDs using the PCIe x4 bus use M-keys since it is the only one that supports PCIe x4 lanes  drives, also known as Next Generation Form Factor drives, are a type of SSD that uses the interface to connect directly

street fighter ii_ the world warrior slot slot 2 slot For slots intended to be used with NVME SSDs, you see M-keying, that makes 4 lanes of PCIe available The so-called 'WiFi drives, also known as Next Generation Form Factor drives, are a type of SSD that uses the interface to connect directly