Fantom G-Force MegaDisk MD3U4000 DAS Hard Drive Array - 2 x HDD Installed - 4 TB Installed HDD Capacity. 4TB FANTOM GFORCE3 MEGADISK USB 3.0/2.0 RAID 1 0 JBOD SPAN COMBHD. RAID Supported - 2 x Total Bays - USB 3.0