Digittrade RS64. Hard drive capacity: 640 GB, Hard drive rotational speed: 5400 RPM, Hard drive interface: Serial ATA. Colour of product: Black. Width: 79 mm, Depth: 15 mm, Height: 132 mm. Average latency: 12 ms, Data transfer rate (max): 480 Mbit/s, Mean time between failures (MTBF): 600000 h