Full Details from Amazon.com : http://www.amazon.com/gp/product/B004K4TE8G?tag=onigi-20
Rosewill Full Aluminum Cover Metal Tray 3.5-Inch USB 3.0 External Enclosure - Silver (RX-358-U3S)
Size 35
Internal Interface SATA III
External Interface USB 30
Maximum Capacity per Bay Up to 3TB WinXP Not supported 3TB
Fan 1 x 80mm cooling fan Internal Tray
Transfer rates up to 48 Gbps with USB 30