The Acer Aspire 15 A315-59 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 for installation. (The M.2 slot support PCIe NVMe Generation 4.0 x4 and 3.0 x4 Solid State Drives)