The Dell G15 5525 Gaming Laptop Supports Single Drive Configuration Only. (One M.2 NGFF (2280) or (2230) Solid State Drive) Note: The M.2 (2280) and (2230) Drives each use a unique thermal bracket and cannot be interchanged. The M.2 (2230) Drive uses thermal bracket p/n 0FJ75H and the M.2 (2280) Drive uses thermal bracket p/n 026X1Y. The M.2 slot supports M.2 (2280) and (2230) Drives by moving the drive mounting bracket p/n 0X8MY9 to accommodate the form factor. (The M.2 slot support PCIe NVMe Generation 4.0 x4 and 3.0 x4 Solid State Drives)