Fujitsu S26341-F103-L220. Hard drive capacity: 2048 GB, Hard drive interface: USB 3.0, Hard drive size: 88.9 mm (3.5 "). USB data transfer rates: 5000 Mbit/s. Colour of product: Black. Input voltage: 100-240 V, Input frequency: 50/60 Hz, Power consumption (typical): 10 W. Windows operating systems supported: Windows XP, Windows Vista, Windows 7