Sans Digital 4 Bay SATA to USB 3.0 JBOD USB 3.0 External Hard Drive Enclosure - Silver (TR4U+) Supports four 3.5-inch SATA hard drives to USB 3.0 interface, using a single USB 3.0 cable. Access 4 hard drives individually. Compact and stylish 4-bay tower design with protective ventilating cover. Backward compatible with USB 2.0.