Micronet 1TB G-Force/3. Hard drive capacity: 1024 GB, Hard drive rotational speed: 7200 RPM, Hard drive interface: USB 3.0, USB 2.0. USB data transfer rates: 5000 Mbit/s. Colour of product: Black. Input voltage: 110-220 V. Windows operating systems supported: Windows Vista, Windows 7, Mac operating systems supported: Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion, Server operating systems supported: Windows Server 2003, Windows Server 2008