Seagate DiamondMax 21 320GB SATA 3Gb/s, Barracuda. Hard drive capacity: 320 GB, Hard drive rotational speed: 7200 RPM, Hard drive interface: Serial ATA II. Weight: 0.58 kg, Height: 20.99 mm, Width: 101.6 mm. Operating temperature range (T-T): 0 - 60 °C, Storage temperature range (T-T): -40 - 70 °C