The Acer Aspire 5 A515-55 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 Acer, you will need the 2.5" Drive bracket and connector cable kit p/n 42.HGLN7.SV1 for installation. (The M.2 slot support PCIe NVMe Solid State Drives)