4TB HDD Drobo USB 3.0
4TB Capacity - 4 Drives Installed - 4 Drives Max. - 3.5" Drives - Desktop Form Factor - SATA 6.0Gbps Interface - Hot-Swappable Bays - USB 3.0 / USB 2.0 Interface - Direct Attached Storage - Windows / OS X Compatible - BeyondRAID Technology - 1 Year Depot Carry-In Mfg. Warranty