Automotive two-ports USB hub controller, tray packing EZ-USB™ HX3 automotive is a family of USB 5Gbps hub controllers compliant with the USB 3.1, Gen 1 specification. It supports USB 5Gbps (formerly known as superspeed), 480 Mbps (high-speed), 12 Mbps (full-speed), and 1.5 Mbps (low-speed) on all the ports.