The Asus ROG G703GS Laptop Supports 1, 2, 3 or 4 Drive Configurations. (One 2.5" Solid State Drive or Hard Drive and/or Three M.2 NGFF (2280) Solid State Drives) Note: If the 2.5" Drive was not installed from Asus, you will need the 2.5" Drive bracket p/n 13NB0EU0AM0101 for installation. (The three M.2 slots support SATA and PCIe NVMe Solid State Drives)