The HP 17s Notebook 17s-cu0016tu 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 cover p/n L22534-001 and cable p/n L22526-001 for installation. (The M.2 slot supports PCIe NVMe Solid State Drives)