Seagate ST9750423AS, Momentus. Hard drive capacity: 750 GB, Hard drive size: 88.9 mm (3.5 "), Hard drive rotational speed: 5400 RPM. Power consumption (typical): 1.6 W, Power consumption (idle): 0.55 W, Start-up current: 1 A. Weight: 115 g, Height: 9.5 mm, Width: 69.85 mm. Operating temperature range (T-T): 0 - 60 °C, Storage temperature range (T-T): -40 - 70 °C, Non-operating shock: 1000 G