The HP 15 Notebook 15-db0997ne Comes in 2 Different Drive Options from HP and Supports Single Drive Configuration Only. (One 2.5" Solid State Drive or Hard Drive) or (One M.2 NGFF (2280) Solid State Drive using a Adapter Board) Note: When the M.2 (2280) Drive is installed, the M.2 Drive occupies the 2.5" Drive bay using a adapter board. If replacing the M.2 Drive for a 2.5" Drive, you will need the 2.5" Drive bracket p/n L20455-001 and connector board p/n L20454-001 and cable p/n L20456-001 (uses same cable as M.2 Drive) for installation. If replacing the 2.5" Drive for a M.2 Drive, you will need the M.2 Drive bracket p/n L20458-001 and M.2 Drive connector board p/n L20457-001 and M.2 Drive cable p/n L20456-001 (uses same cable as Hard Drive) for installation. (The M.2 Drive connector board supports SATA only Solid State Drives)