SSD Drives (WDS200T2B0B), Blue, Internal Solid State Drive (SSD), FF M.2 2280, 2TB, 3D NAND, SATA III, Max Sequential Read Up to 560 MBps, Write Up to 530 MBps, 4KB Random Read Up to 95,000 IOPS, Write Up to 84,000 IOPS, MTTF Up to 1.75M hours. A WD Blue 3D NAND SATA SSD uses 3D NAND technology not only for higher capacities than the previous generation WD Blue SSDs, but also to help reduce cell-to-cell interference for enhanced reliability.