The Dell Vostro-5568 Laptop Supports Single and Dual Drive Configurations. (One 2.5" Solid State Drive or Hard Drive and/or One M.2 NGFF (2280) Solid State Drive) Note: If the 2.5" Drive was not installed from Dell, you will need the 2.5" Drive caddy p/n FFRHH and cable p/n CW40H for installation. (M.2 Slot Supports SATA Solid State Drives)