Sans Digital MR2UT+ MobileRAID - 2 Bay SATA to eSATA/USB 3.0 RAID 0/1 / JBOD/Spanning Enclosure - Silver 2 bay Hardware RAID enclosure support RAID 1 or RAID 0. Hardware RAID embedded to the enclosure to eliminate OS compatibility issues. Dual Host Interfaces: USB 3.0 and eSATA (backward compatible with USB 2.0). LED status and buzzer for RAID management and monitor system status. Features two RAID modes, including RAID 0 or RAID 1 for redundancy or performance. Support JBOD* for individual drives access and spanning for simple storage expansion. Support on eSATA only, eSATA port multiplier is required. Supports the latest 3TB hard drive. Up to 6TB in storage capacity. Supports Windows 7, 2000, XP, Vista, and Windows Server 2003 and 2008, MAC and Linux.