QNAP TS-412U, 2x 2 TB. Processor family: Marvell, Processor clock speed: 1.2 GHz. Total storage capacity: 4000 GB, Hard drive capacity: 2000 GB, RAID levels: 0, 1, 5, 6, 10, JBOD. Internal memory: 0.25 GB, Internal memory type: DDR2, Flash memory: 16 MB. Compliance industry standards: IEEE 802.3, 802.3u, 802.3ab, Supported network protocols: CIFS/SMB, AFP (3.1), NFS, FTP, HTTP, HTTPS, Telnet, SSH, iSCSI, SNMP, UPnP, Cabling technology: 10/100/1000Base-T(X). Operating system installed: Linux