The Dell Alienware m15 R5 Ryzen Edition Laptop Supports Single and Dual Drive Configurations. (Two M.2 NGFF (2280) or (2230) Solid State Drives) Note: Both of the M.2 slots support M.2 (2230) or (2280) Drives by moving the solid state Drive screw mount to accommodate the form factor. If Installing a M.2 (2280) Drive, you will need the M.2 (2280) thermal heatsink cooling bracket p/n 26X1Y for installation. (The performance of the PCIe NVMe Generation 4.0 x4 will be Limited to PCIe NVMe Generation 3.0 x4 bandwidth on the system)