Seagate Constellation.2, Constellation. Hard drive capacity: 500 GB, Hard drive interface: Serial ATA, Hard drive speed: 7200 RPM. Power consumption (typical): 4.51 W, Power consumption (idle): 2.67 W, Start-up current: 0.79 A. Width: 2.76" (70 mm), Height: 0.583" (14.8 mm), Depth: 3.96" (100.5 mm). Data transfer rate: 6 Gbit/s