Did you have to download the software or does it come with it on already?
As soon as It's all hooked up it only takes about a minute for the receiver to pick up all the channels.
The plug and scart lead should both come with the box.
I use one of these to split the cable connected to my modem ( This will only work if at one point you had a joint package installed in your house Eg. Tv & Internet from the same provider ):
Comment