3.5" USB 2.0 Aluminum Dual SATA Hard Drive Enclosure 3.5-inch USB 2.0 Aluminum External Dual SATA Hard Drive Enclosure General Features: Aluminum alloy and plastic frame - NOTE: This enclosure has been successfully tested with two 1 terabyte (2 terabytes, total) drives Supports two (2) 3.5-inch SATA hard drives (hard drives not included) USB 2.0 interface Data Transfer Rate: up to 480 Mbps Built-in Cooling System (built-in fan) SATA transfer rate: up to 1.5 Gbps and up to 3.0 Gbps using SATA II drives