Support all brand of 3.5-Inch SATA I / II / III hard disk drive up to 18TB per drive, Support SATA 3 6.0Gbps Hard Drive Speed Transfer rate up to 5.0Gbps via USB 3.0, and 6.0Gbps via eSATA Support SATA III 6.0Gbps hard drive transfer rate One button interface selection: Switch USB 3.0 or eSATA interface by pressing one button Smart Fan Function with built-in thermal sensor support Auto & Manual mode with 3 level of fan speed 100V to 240V