Axiom 400GB 2.5" SATA-III. Solid-state drive capacity: 400 GB, Size: 63.5 mm (2.5 "), Solid-state drive interfaces: Serial ATA, Serial ATA II, Serial ATA III. Read speed: 550 MB/s, Write speed: 515 MB/s, Random write (4KB): 60000 IOPS. Security algorithms supported: 256-bit AES. Power consumption (sleep mode): 0.200 W, Power consumption (read): 5 W, Power consumption (write): 5 W. Mean time between failures (MTBF): 2000000 h