Use coaxial splitters with a cable modem.
It is always best to use a dedicated coaxial cable outlet for your cable modem so as to provide the strongest cable signal for the most consistent Internet performance. When this isn't possible, sometimes using a coaxial cable splitter is a good alternative. As the name suggests, a splitter takes a coaxial cable signal and splits it between two devices. Using a coaxial cable with your cable Internet modem could not be simpler.
Instructions
1. Connect your coaxial outlet to the splitter. Take the coaxial cable that is coming out of your coaxial wall plate (connect one if there isn't one attached to the wall plate already) and attach it to the coaxial connection on the splitter that is labeled "In" or "Input." Screw it onto the coaxial connection until it is hand-tight.
2. Connect one of the coaxial outputs to your cable modem. Attach the second coaxial cable from one of the coaxial connections on the splitter labeled "out" or "output" and screw it on until it is hand-tight. Attach the other end of that cable to the coaxial connection on your cable modem.
3. Connect the other coaxial output to your TV or other device. In the same manner as described, connect the last coaxial cable from one of the outputs on the splitter to your TV or other device with a coaxial connection.
Tags: coaxial cable, cable modem, coaxial connection, your cable, your cable modem