Intel 40GB 320 Series 2.5". Solid-state drive capacity: 40 GB, Size: 63.5 mm (2.5 "), Solid-state drive interfaces: Serial ATA II. Read speed: 200 MB/s, Write speed: 45 MB/s, Random write (4KB): 30000 IOPS. Security algorithms supported: 128-bit AES. Power consumption (standby): 0.7 W, Power consumption (read): 2 W, Power consumption (write): 2 W. Operating shock: 1500 G, Non-operating shock: 1500 G, Operating vibration: 2.17 G