The Lenovo 300e Windows 2nd Gen Laptop Comes in 2 Different Drive Options from Lenovo and Supports Single Drive Configuration Only. (One M.2 NGFF (2242) Solid State Drive) or (One eMMC 5.1 Solid State Flash Drive) Note: Models that have a eMMC Solid State Flash Drive installed are not upgradable, the eMMC Flash Drive is integrated onto the system board and can Not be removed. Models with a M.2 2242 Solid State Drive installed are upgradable and replaceable. We recommend to verify what type Solid State Drive your model has installed before ordering.