The Lenovo Yoga 300w Gen 4 (Lenovo) 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. M.2 Drives with PCIe Generation 4.0 x4 performance are downgraded to closer to PCIe Generation 3.0 x4 performance due to Intel platform limitations.