Dahua SSD C900 Plus-B 256GB M.2 2280 PCIe3x4 3D NAND, 7mm, R/ W up to 3300MB/ s/ 1200MB/ s, IOPS(R4K) 124K/ 177K, TBW 128TB 3y wty (DHI-SSD-C900VN256G-B)