Installation was difficult. With the depth of the receptacle assembly, There was not enough room for the wiring. I had to replace the existing "old work" box with one that was extra deep. Even then, I had to modify the new box, removing portions of the interior stabilizing fins that kept the outlet from fully seating in the box. However, now that the nightmare installation is done, I can say that it is very convenient to have the USB charging connectors in the wall receptacle and it has done a great job of charging my battery operated devices.