Types of Drives & Slots

Two types of SSDs: SATA and NVMe m2 slot types 2: one with a B key and one with a M key to PCI-E x4 adapter that can take multiple lengths of drives socket types B+M keyed m2 expansion slot What is NVMe M2 SSD and SATA or mSATA

m2 pcie slot The designation simply refers to a form factor for an SSD, and it is not inherently better than other types of SSDs like SATA or PCIe