Iomega StorCenter Pro ix4-100 NAS Server, 2.0TB. Total storage capacity: 2000 GB, Hard drive capacity: 500 GB, Hard drive rotational speed: 7200 RPM. Memory type: DDR RAM, Internal memory: 512 MB. Processor clock speed: 400 MHz. Supported network protocols: TCP/IP. Bundled software: MC Retrospect Express HD, Operating system installed: Linux