QNAP TS-459 Pro/2TB. Total storage capacity: 2000 GB, Hard drive interface: Serial ATA. Memory type: DDR2, Internal memory: 1024 MB, Flash memory: 512 MB. Processor family: Intel Atom, Processor model: D510, Processor clock speed: 1660 MHz. Power requirements: 100 - 240V, Output power: 250 W. Weight: 3650 g