Portable, ultra-fast storage drive! This 2.5-inch USB 2.0/eSATA Hard Drive Enclosure is a complete RAID solution with support for external RAID modes including BIG (Span), JBOD (Single), Fast (Striping), SAFE (Mirror), SAFE33, SAFE50, Reserved or GUI only! It accepts two SATA hard drives and features an aluminum material for superb heat dissipation and helps keep your drives running cool. There's also a one touch backup button for easy file backup! With its USB 2.0 interface you can get data transfer rates up to 480 Mbps or use the eSATA interface for quick data transfer rates up to 3.0 Gbps!