Western Digital RE 1TB 3.5" SATA III. Hard drive capacity: 1000 GB, Hard drive interface: Serial ATA III, Hard drive speed: 7200 RPM. Power consumption (read): 8.2 W, Power consumption (write): 8.3 W, Power consumption (idle): 5.9 W. Width: 4" (101.6 mm), Height: 1.03" (26.1 mm), Depth: 5.79" (147 mm). Data transfer rate: 6 Gbit/s