I have a router here at home and that's what I use to share internet access among all of the computers. I just configure the router, plug the DSL modem in it, uplink it to a switch for expandability ...
The USB port on the back of your router has a lot of uses you might not consider at first. Try these to put it to good use.
An average home router typically has 4-5 Ethernet ports, and while they suffice if most devices are connected wirelessly, the moment you think of switching to Ethernet connectivity, the ports can ...