WD Red SN700 250GB M.2 2280 PCIe Gen3 x4 NVMe Solid State Drive (WDS250G1R0C) - Capacity: 250GB, Form Factor: M.2 2280 S3-M, Sequential Read Performance: 3100MB/s, Sequential Write Performance: 1600MB/s, Random Read: 220K IOPS, Random Write: 180K IOPS, Interface: PCIe Gen3 x4, Endurance (TBW): 500