The Dell Latitude 13 3000 (3301) Laptop Supports Single and Dual Drive Configurations. (One M.2 NGFF (2280) or (2230) Solid State Drive and One M.2 NGFF (2230) Solid State Drive in the WWAN Slot on Select Models) Note: In the primary M.2 slot, the M.2 (2230) Drive uses a extender adapter bracket to accommodate for the larger M.2 (2280) slot. (Both M.2 slots support PCIe NVMe only Solid State Drives)