The Acer Swift 1 SF114-34 Laptop comes in 3 Different Drive Options from Acer and Supports Single and Dual Drive Configurations. (One M.2 NGFF (2280) Solid State Drive) or (One eMMC Flash Drive) or (One M.2 NGFF (2280) Solid State Drives and/or One eMMC Flash Drive) Note: Some models equipped with a eMMC Flash Drive have a additional M.2 slot that supports PCIe Solid State Drives. the eMMC Flash Drive is integrated on the system board and is not upgradable. (The M.2 Slot Supports PCIe NVMe Solid State Drives)