Axiom SSD25A32480-AX. Solid-state drive capacity: 480 GB, Size: 63.5 mm (2.5 "), Solid-state drive interfaces: Serial ATA III. Read speed: 540 MB/s, Write speed: 450 MB/s, Random write (4KB): 50000 IOPS. Security algorithms supported: 256-bit AES. Power consumption (sleep mode): 0.2 W. Mean time between failures (MTBF): 2000000 h