The Dell Vostro-3425 Laptop Supports Single Drive Configuration Only. (One M.2 NGFF (2280) or (2230) Solid State Drive) Note: The M.2 slot supports PCIe NVMe Generation 4.0 x4 and 3.0 x4 Solid State Drives. The M.2 (2280) and (2230) Drives each use a unique thermal Plate and cannot be interchanged. (M.2 (2230) thermal plate p/n 37Y7P and M.2 (2280) thermal plate p/n 0FP8R3)