Fantec 640GB External HDD. Hard drive capacity: 640 GB, Hard drive interface: Serial ATA, Hard drive size: 63.5 mm (2.5 "). Colour of product: Black. Weight: 0.4 kg. Certification: TÜV, CSA, CUL/UL, CE. Data transfer rate (max): 480 Mbit/s, Disks included quantity: 1 pcs, Material: Aluminium