SHARGE Disk 10Gbps 2230 NVMe SSD Enclosure

Choosing between NVMe in external case vs - m 2 slot vs nvme NVMe technology provides superior storage, superior speed and superior compatibility Because NVMe utilizes PCIe sockets, it transfers 25x more data than m2 expansion slot You should not be worrying too much about the M+B keying as what you need is an M2 PCIe NVMe SSD which will be any such SSD you can find

m2 slot mainboard There are two types of SSDs: SATA and NVMe SATA uses an older interface with one designed around hard drives while NVMe is designed for flash memory