NVM Express

Utilize an available PCIe x4 expansion slot for the installation, removal, or interchange of PCIe SSDs The drive tray accommodates M-Key NVMe SSDs

2 it would be NVMe compatible instead, what came before was usually mSATA or miniPCIe drives NGFF replaced this and unified it And

m2 slot types I cloned the old drive, opened up the laptop to swap the drives and saw the 2 notches on the older drive The 2 notch slot is for SATA

m2 vs nvme slot 2 drives ideal for SFF systems that have little room for cable routing motherboard socket Two slotssockets on an EVGA motherboard