Lenovo ThinkSystem SR650 V3 Server Product Guide > Lenovo Press

B550M PRO-VDH WIFI m 2 drive slot 2 drive into the slot DO NOT OVER TIGHTEN THE SCREW THAT HOLD THE M2 STICK INTO POSITION IF YOU DO IT WILL NOT BOOT UP m2 slot pc 2 SSD is a small form factor solid-state drive that internally mounted storage expansion cards use SSDs conform to a computer industry specification

m2 slot mainboard 2 slot can interface with SATA , PCI Express (the default interface