Data-network-ethernet, call it what you will, but this simple to setup back bone allows you to share out your broadband internet service, pictures, music, etc. to all of the computers in your household. To get the greatest speeds possible you will need to get the right cable and we can supply it to you. Not only is this cable good for your data network it is also handy for telephone wiring. Allowing you to get up to 4 lines to a phone on every cable.