To get the best out of your Sky Q box it needs to be connected to your internet router to watch on demand TV and movies. The most reliable way to connect it is to use an ethernet cable, this connects from the yellow port marked ethernet on the Sky Q box to one of the ports on your router. Its often not desirable to locate your router near to the Sky Q box but its still easy to connect with something like a cheap 10m network cable. In some cases it might be required to have a longer distance between the equipment but it can still be connected using a longer lead such as a 20m ethernet cable.