The HP 15 Notebook 15-da1016tx 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 HP, 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 for installation. (The M.2 slot supports SATA and PCIe NVMe Solid State Drives)