The Dell Inspiron 3482 Laptop Supports Either 2 or 3 Drives. (All Models Have 1x 2.5" Drive Bay and 1x M.2 Slot. Select Models have a Additional eMMC Flash Drive Installed) 3 Drive Configuration: These models are equipped with a eMMC Flash Drive set as the primary Drive and the additional 2.5" Drive and/or the M.2 Solid State Drive are for secondary storage. 2 Drive Configuration: These models do not have the eMMC Flash Drive Installed and the 2.5" Drive or the M.2 Drive are set as the primary drive. Note: The eMMC Flash Drive is integrated on the system board and can not be replaced or upgraded. (The M.2 slot supports PCIe NVMe Solid State Drives)