SOHOTANK ST3620 , design concept by SATA hard drive and host transfer various interface, support JBOD function which not only is able to expand the capacity but easy to carry along by the small volume design. ST3620 designs special for the SOHO group and small-medium enterprises, hence, no matter SOHO group require expands data storage area or small-medium requires adding the storage space on the server is easy to connect with the ST3620. Through a USB interface connect with two SATA II hard disks can expand the capacity and reach 1TB easily, is the cost-effective of new choice for SOHO group stores the multimedia materials or small-medium enterprises as server back up system. Product Features Plug and play USB2.0 interface under Mac and PC Support JBOD function with two hard disks by one cable to save the complicate and inconvenient multiple cables management. Drive Interface: 2x 3.5" SATA2 3.0 GHz System auto-detector design for temperature and fan status and warning by the purple LED light. Hot-swap design under JBOD mode, when hard disk failed is able to replace new hard disk online without shutting down the system. Built-in with 70W power supply