ORICO 3529SUS3-C is a tool free HDD enclosure support 2 x 3.5" SATA HDD and clone function. With humanized and easy installation design you just need to put the HDD on the tray insert it into the enclosure directly and then you can use it at once. It provides USB3.0 e-SATA dual high speed transfer interfaces USB3.0 maximum theoretical transfer rate up to 5Gbps and downward compatible with USB2.0/USB 1.1; e-SATA interface transfer rate could reach 3Gbps. 3529SUS3-C can not only support 2 x HDD at the same time to access date conveniently but also support clone function without connecting computer just connect with power supply you can clone your data from source disk to destination disk easily. Besides it also supports HDD intelligent sleep function so 3529SUS3-C will be your best choice for data storage!