Automotive two-ports USB hub controller, tape & reel packing EZ-USB™ HX3 Automotive is a family of USB 480 Mbps (high-speed) hub controllers compliant with the USB 3.1, Gen 1 specification. It supports USB 480 Mbps (high-speed), 12 Mbps (full-speed), and 1.5 Mbps (low-speed) on all the ports.