The Dell Inspiron 7501 Laptop Supports Single and Dual Drive Configurations. (Two M.2 NGFF (2280) or (2230) Solid State Drives) Note: Both M.2 slots support M.2 (2280) or (2230) Drives by moving the metal mounting bracket to accommodate the form factor. (Both M.2 slots support PCIe NVMe Solid State Drives)