I'm new to the neighborhood and I'm slowing getting everything setup in my new home. I've heard that most of the houses in this area were wired the same for the most part, so I'm hoping someone can answer this question. There's a wallplate in most of the rooms that has 4 ports on it. One for data, one for phone, one for cable, and another labeled "video". I'm a little confused about the video port. Should I be looking for an input somewhere in the house that would then be broadcast to those ports?