The Dell Latitude 3445 Chromebook Comes in 2 Different Drive Options from Dell and Supports Single Drive Configuration Only. (One M.2 NGFF (2230) Solid State Drive) or (One 32GB, 64GB or 128GB eMMC Solid State Flash Drive) Note: Models equipped with a M.2 (2230) Solid State Drive are upgradable. Models equipped with a 32GB, 64GB or 128GB eMMC Flash Drive are not, the eMMC Flash Drive is integrated onto the system board and cannot be replaced or upgraded.