The Acer Nitro 5 AN515-58 Laptop Supports up to 3 Drives. (One 2.5" Solid State Drive or Hard Drive and/or Two M.2 NGFF (2280) Solid State Drives) Note: Both M.2 slots support PCIe NVMe Generation 4.0 x4 and 3.0 x4 Solid State Drives. If the 2.5" Drive was not installed from Acer, you will need the 2.5" Drive bracket and cable for installation.