Alternate Ways to Connect Your Coax Cable
As summarized in the Quick Start, one important connection is the coaxial
cable connection that carries your cable Internet service to your MG7550.
Here are the main ways you can make that connection:
1) Use the loose end of an available "live" coaxial cable from your cable
service provider. Plug the loose end into the Coax jack of your cable
modem.
2) If there's a "live" coax jack in your wall, connect a coax cable between
that jack and the Coax jack of your cable modem.
3) Use a "live" cable that's plugged into one of your televisions. If you still
want cable TV to go to that TV set, you can get a coaxial splitter and
two cables of the right length as shown below.