The HP 14 Laptop 14-bs013nf Comes in 2 Different Drive Options from HP and Supports Single and Dual Drive Configurations. (One 2.5" Solid State Drive or Hard Drive + One M.2 NGFF (2280) Solid State Drive) or (One M.2 NGFF (2280) Solid State Drive + One eMMC Solid State Flash Drive using a Adapter Bracket) Note: When the eMMC Flash Drive is installed, the eMMC Flash Drive occupies the 2.5" Drive bay using a adapter bracket. If replacing the eMMC Drive for a 2.5" Drive, you will need the 2.5" Drive caddy p/n 925354-001 for installation. (The M.2 slot supports SATA only Solid State Drives)