• Support all brand of 3.5" SATA I II III hard disk drive up to 8TB per drive, and up to 4 x 8TB br • Support SATA 3 6.0Gbps hard drive transfer rate br • Transfer rate up to 5.0Gbps via USB 3.0, Transfer rate up to 6.0Gbps via eSATA br • Comptaible with Mac USB 3, Smart Fan Function br • Thermal Sensor built-in, Auto and Manual Mode and One Button Interface selection to switch USB 3.