Add 7 external walldin rail mountable usb 20 ports from a single usb connectionr r a single usb host connection provides 7 additional usb ports with per port surge protectionr surface and din mounting options and terminal block power input to suit a wide range of industrial applicationsr backed by a startechcom 2 year warranty and free lifetime technical supportr r this sturdy industrial grade usb 20 hub can be wall mounted or installed onto a din rail for convenient access to its 7 female