The Dell Latitude 3380 Laptop Comes in 3 Different Drive Options from Dell and Supports Single Drive Configuration Only. (One 2.5" Solid State Drive or Hard Drive) or (One M.2 NGFF (2280) Solid State Drive) or (One eMMC Solid State Flash Drive) Note: When a M.2 (2280) Drive is installed, the M.2 Drive occupies the 2.5" Drive bay. Both the 2.5" Drive, and the eMMC Flash Drive use the same caddy p/n TTK6X and cable p/n 43P6K for installation. The M.2 Drive is installed in a M.2 Drive carrier p/n xxxxx with Interposer board p/n FC16G/50RR6 and cable p/n 43P6K and is then Installed in the 2.5" Drive bay.