Part Number for Mfr: MZ-76E4T0E 4TB of capacity Dimensions: 2.5 inches SATA 6Gb/s interface (compatible with SATA 3Gb/s and SATA 1.5Gb/s) NAND Samsung V-NAND 3bit MLC flash Samsung MJX Controller as the controller Cache 4GB of LPDDR4 memory Sequential performance Maximum Reading Speed: 550 MB/s Maximum Sequential Writing Speed: 520 MB/s Up to 10K IOPS for 4K Random Read Speed (QD1); Up to 42K IOPS for 4K Random Write Speed (QD1); Up to 98K IOPS for 4K Random Read Speed (QD32); and Up to 90K IOPS for 4K Random Write Speed (QD32). 1.5 million hours is the MTBF. Dependability Active Power Consumption Read/Write: 4.0 W maximum, 3.0 W average (4TB) Maximum idle power: 0.5 W (4TB) Sleep of the device: 2 mW (4TB) 1,500G and 0.5ms (half sine) shock Operating temperature range: 0°C to 70°C WxDxH measurements: 3.94 x