The Dell Latitude 7389 2-in-1 Laptop Supports Single Drive Configuration Only. (One M.2 NGFF (2280) Solid State Drive) Note: If upgrading from a M.2 SATA Drive to a M.2 PCIe NVMe Drive, you will need the M.2 thermal heatsink cooling bracket p/n T1K84 for installation. (The M.2 slot supports SATA and PCIe NVMe Solid State Drives)