The Dell Inspiron 7510 Laptop Supports Single and Dual Drive Configurations. (One M.2 NGFF (2280) or (2230) Solid State Drive in Primary Slot and/or One M.2 NGFF (2230) Solid State Drive in Secondary Slot) Note: The primary M.2 slot 1 (SSD-1) supports both M.2 (2280) and (2230) Drives and the secondary M.2 slot 2 (SSD-2) supports M.2 (2230) Drives only. When present, the M.2 (2230) Drive installed in slot 1 (SSD-1) uses a adapter bracket extender to accommodate for the larger M.2 (2280) slot. (The primary M.2 slot 1 (SSD-1) supports PCIe NVMe Generation 4.0 x4 and 3.0 x4 Drives and the secondary M.2 slot 2 (SSD-2) supports PCIe NVMe Generation 3.0 x4 Drives)