Western Digital Caviar Black 1.5TB. Hard drive capacity: 1500 GB, Hard drive size: 88.9 mm (3.5 "), Hard drive rotational speed: 7200 RPM. Weight: 750 g, Height: 26.1 mm, Width: 101.6 mm. Operating temperature range (T-T): 0 - 60 °C, Storage temperature range (T-T): -40 - 70 °C