The Dell Vostro-5510 Laptop Supports Single and Dual Drive Configurations. (One M.2 NGFF (2280) or (2230) Solid State Drive in Slot 1 and/or One M.2 NGFF (2230) Solid State Drive in Slot 2) Note: M.2 slot 1 supports M.2 (2280) and (2230) Drives by moving the drive mounting bracket to accommodate the form factor. M.2 slot 2 supports M.2 (2230) Drives only. (M.2 slot 1 supports M.2 (2280) and (2230) PCIe NVMe Generation 4.0 x4 and 3.0 x4 Solid State Drives and M.2 slot 2 supports M.2 (2230) PCIe NVMe Generation 3.0 x4 Solid State Drives)