Western Digital AV-25 Mobile. Hard drive capacity: 500 GB, Hard drive interface: Serial ATA II, Hard drive speed: 5400 RPM. Power consumption (standby): 0.1 W, Power consumption (off): 0.1 W, Power consumption (read): 1.4 W. Width: 2.68" (68 mm), Height: 0.268" (6.8 mm), Depth: 3.94" (100.2 mm). Color of product: Black, Data transfer rate: 3 Gbit/s, Mounting: Vertical/Horizontal