Iomega REV 70GB ATAPI Backup Drive SI 5-Pack. Hard drive capacity: 70 GB, Hard drive rotational speed: 4200 RPM, Hard disk average seek time: 12 ms. Weight: 420 g, Height: 25 mm, Width: 146 mm. Bundled software: EMC Retrospect Express (Backup & Disaster Recovery). Minimum hard disk space: 1024 MB, Minimum processor: 333MHz, Minimum RAM: 256 MB