Internet Video Series, Part 1
Episode 12, Segment 05 of 11
As you connect ethernet - "patch" - cables between your additional computers and the ethernet connectors of your router, you should see the associated - "link lights" - illuminate, one by one, indicating proper ethernet connection.
If any link light fails to activate as expected, you may need to tinker a bit
with the connectors or cable, swapping with a - "crossover" - cable or
activating - "crossover" - switches if necessary.
Once each link light is illuminated, you will be able to use any communicating applications that rely only on ethernet protocols.
Episode 12, Segment 06 of 11