Seagate DiamondMax 22 1TB SATA, DiamondMax 21. Hard drive capacity: 1024 GB, Hard drive rotational speed: 7200 RPM, Hard drive interface: Serial ATA. Start-up current: 2.8 A. Height: 26 mm, Width: 101.6 mm, Depth: 147 mm. Operating temperature range (T-T): 0 - 60 °C, Storage temperature range (T-T): -40 - 70 °C, Operating shock: 70 G