WD BLACK SN850X 8TB M.2 2280 PCIe Gen4 x4 NVMe Solid State Drive (WDS800T2X0E) - Capacity: 8TB, Form Factor: M.2 2280, Sequential Read Performance: 7200MB/s, Sequential Write Performance: 6600MB/s, Random Read: 1200K IOPS, Random Write: 1200K IOPS, Interface: PCIe Gen4 x4, Endurance (TBW): 4800