Lenovo IX2 Network Storage 2-Bay, 4TB, 2HD X 2TB, Recertified (70A69001AP-R) Desktop, compact, form factor Marvell 6282 CPU at 1.6GHz with 256MB RAM 2 x 3.5 Easy-Swap SATA-II Hard Disk Drives RAID 1, 0, JBOD 1 x RJ45 10/100/1000Mbps (GbE) Ethernet port LAN standards: IEEE 802.3, IEEE 802.3u 1 x USB 2.0 port (to connect external HDD, UPS, Bluetooth dongle) AC Voltage 100-240 VAC