The Lenovo IdeaPad Duet 3-11IAN8 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 UFS 3.1 Solid State Flash Drive) Note: Models that have a UFS 3.1 Solid State Flash Drive installed are not upgradable, the UFS 3.1 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.