High-performance USB 3.0 4-port Mini Hub allows for up to four USB 3.0 devices to be connected simultaneously at a transmission speed of 5 Gbps, while still providing connectivity and support for the older USB 2.0 (480 Mbps) and 1.1 (12 Mbps) devices. Number of Ports: 4; For Use With: High-Bandwidth Super Speed USB 3.0 Devices; Transfer Rate: 5 Gbps; Width: 3.46".