Iomega REV™ 35/90GB USB 2.0, REV. Hard drive capacity: 35 GB, Hard drive rotational speed: 4200 RPM. Weight: 405 g. Operating temperature range (T-T): 0 - 45 °C, Operating relative humidity range: 8 - 90 %. Average latency: 7.1 ms, Compressed capacity: 90 GB, Minimum hard disk space: 100 MB. Package dimensions (WxDxH): 340 x 79 x 240 mm