ADATA 256GB XPG SX910. Solid-state drive capacity: 256 GB, Size: 63.5 mm (2.5 "), Solid-state drive interfaces: Serial ATA III. Read speed: 550 MB/s, Write speed: 530 MB/s, Random write (4KB): 85000 IOPS. Power consumption (standby): 0.5 W, Power consumption (read): 1.2 W, Power consumption (write): 1.2 W. Mean time between failures (MTBF): 1000000 h. Operating temperature range (T-T): 0 - 70 °C, Storage temperature range (T-T): -40 - 85 °C, Operating relative humidity range: 10 - 90 %