Plug the other end into the coax port on the back of your cable modem. If you're using a cable modem, you'll see a coax port where you can screw in the other end of the coax cable.

Screw one end of a coaxial cable to the RF connector on the back of the cable modem. Screw the other end of the coaxial cable to the cable outlet on the wall. Insert one end of an Internet cable ...

Setting Up the Cable Modems Each cable modem will need its own coaxial cable line. This requires a cable splitter if you are using the same cable outlet.

For the coaxial cable, any RG-6 rated cable should work. You want to make sure that it has the connectors that screw onto the modem, and not the slip on quick connect ones.

I have about 4 coax jack active in the house, but only 2 have something plugged into them. The jack in the basement with the cable modem, and the jack in the family room with a cablecard tuner.