The st4300usbm mountable 4 port industrial usb hub usb 30 offers a simple way to expand a systems current usb capability by providing 4 additional external usb 30 ports from a single usb 30 host connection with speeds up to 5 gbps designed for extreme operating environments this industrial grade hub provides reliability under almost any condition and can be securely mounted to most surfaces fully compliant with the superspeed usb 30 specification this industrial usb hub is backw