QNAP TS-569 PRO. Processor family: Intel Atom, Processor clock speed: 2.13 GHz. RAID levels: 0, 1, 5, 6, 10, JBOD, Hard drive interface: Serial ATA, Hard drive size: 63.5/88.9 mm (2.5/3.5 "). Internal memory: 1 GB, Internal memory type: DDR2, Flash memory: 512 MB. Compliance industry standards: IEEE 802.3, 802.3u, 802.3ab, Cabling technology: 10/100/1000Base-T(X). Operating system installed: Linux