The Dell Latitude 12-5290 2-in-1 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 the WWAN Slot) Note: When the M.2 (2230) Drive is installed in primary M.2 slot, it uses a adapter bracket p/n 07HMH to accommodate for the larger M.2 (2280) slot. The primary M.2 slot supports M.2 (2280) or (2230) SATA and PCIe NVMe 3.0 x4 Solid State Drives. The secondary WWAN M.2 slot supports M.2 (2230) PCIe NVMe 3.0 x2 Solid State Drives.