"Many of you know you should connect the hot lead to the red binding post, but even though that's the simplest thing one of these custom audio/video installers would do, for many of us that would require an explanation! And do you know what to do when, for your client to listen to music, he needs his internet modem set up a particular way? How many of your friends know what bridged mode is and why it's required? How about an open port so you can see your new surveillance cameras on your phone?