Iomega NAS 400e Storage Expansion Array - 1.0 TB. Hard drive capacity: 1000 GB, Hard drive rotational speed: 7200 RPM, RAID levels: RAID 5, RAID 1. Memory type: DDR RAM Module (ECC), Internal memory: 1000 MB. Processor family: Intel Pentium 4, Processor clock speed: 3000 MHz. Networking features: TCP/IP, AppleTalk, IPX, NetBEUI. Bundled software: Iomega StorCenter Pro NAS Discovery Software