The Dell XPS 13 Plus 9320 Laptop Supports Single Drive Configuration Only. (One M.2 NGFF (2280) or (2230) Solid State Drive) Note: The M.2 (2280) and (2230) Drives each use a unique thermal heat shield and cannot be interchanged. If replacing the M.2 (2230) Drive for a M.2 (2280) Drive, the thermal heat shield will need to be replaced. (The M.2 slot supports PCIe NVMe Generation 4.0 x4 and 3.0 x4 Solid State Drives)