Formac 500GB disk maxi USB 2.0, White. Hard drive capacity: 500 GB, Hard drive rotational speed: 7200 RPM, Hard drive size: 88.9 mm (3.5 "). Colour of product: White. Weight: 900 g, Width: 117 mm, Depth: 194 mm. Minimum processor: 500 MHz, Minimum RAM: 128 MB