QNAP TS-419U II, 4x 3 TB. Total storage capacity: 12000 GB, Hard drive capacity: 3000 GB, RAID levels: 0, 1, 5, 6, 10. Memory type: DDR3, Internal memory: 512 MB, Flash memory: 16 MB. Processor family: Marvell, Processor clock speed: 2000 MHz. Compliance industry standards: IEEE 802.3, 802.3u, 802.3ab, Networking features: Gigabit Ethernet, Cabling technology: 10/100/1000Base-T(X). Security algorithms supported: HTTPS, SSH, SSL/TLS