Freecom Mobile Drive CLS 1TB. Hard drive capacity: 1024 GB, Hard drive interface: Serial ATA, Hard drive size: 63.5 mm (2.5 "). Data transfer rate: 480 Mbit/s, USB data transfer rates: 480 Mbit/s. Colour of product: Black. Weight: 155 g, Width: 109 mm, Depth: 79 mm. Operating temperature range (T-T): 10 - 35 °C, Storage temperature range (T-T): -20 - 70 °C, Operating relative humidity range: 8 - 80 %