OCZ 400GB Vertex 2 Pro Series SATA II 2.5" SSD. Solid-state drive capacity: 400 GB, Size: 63.5 mm (2.5 "), Solid-state drive interfaces: Serial ATA II. Read speed: 285 MB/s, Write speed: 275 MB/s. Power consumption (standby): 0.5 W, Power consumption (read): 2 W, Power consumption (write): 2 W. Mean time between failures (MTBF): 10000000 h. Operating temperature range (T-T): 0 - 70 °C, Storage temperature range (T-T): -45 - 85 °C, Operating shock: 1500 G