If you have MoCA service from your cable company, you will need a special splitter that is designed to work with MoCA. This splitter will allow you to split the signal from your cable modem so that you can use one line for your MoCA connection and another line for your TV. You can purchase a MoCA splitter from most electronics stores or online. Be sure to get a splitter that is compatible with the type of cable modem you have. Once you have your MoCA splitter, follow the instructions included with it to install it. Once it is installed, you should be able to connect your MoCA device and your TV to the splitter and enjoy your MoCA service.