Iomega REV 35GB/90GB SCSI External Drive with Disk. Hard drive capacity: 35 GB, Hard drive rotational speed: 4200 RPM. Weight: 425 g. Operating temperature range (T-T): 0 - 45 °C, Operating relative humidity range: 8 - 90 %. Average latency: 7.1 ms, Compressed capacity: 90 GB, Disks included quantity: 1 pcs