The Asus VivoBook Go 12 E210KA Laptop Comes in 2 Different Drive Options from Asus and Supports Single Drive Configuration Only. (One M.2 NGFF (2280) Solid State Drive) or (One eMMC Solid State Flash Drive) Note: Models equipped with a M.2 (2280) Solid State Drive are upgradable. Models equipped with a eMMC Flash Drive are not, the eMMC Flash Drive is integrated on the system board and is not upgradable. (Models that have the M.2 slot support SATA and PCIe NVMe Solid State Drives)