If you have only one coaxial outlet in the room in which you plan to use your television and cable modem, you don’t have to decide which of the two is most valuable to you. Cable lines can support both your Internet connection and cable television programming without much of a noticeable loss in performance for either component. And with the help of a high quality cable splitter, you can run a single cable to the modem and television’s convergence point. Writer Bio

How Do I Run a Cable for a TV and a Modem  - 80