Western Digital WD My Cloud Expert Series EX4100 4-Bay NAS Server - Diskless - Marvell ARMADA 388 Dual-Core 1.6 GHz - 2GB DDR3 - RAID 0, 1, 5, 10, JBOD, 5 hot spare - iSCSI - 2x Gigabit Ethernet - 3x USB 3.0 (WDBWZE0000NBK-NESN)