Creating a combination wired/wireless home network with an Actiontec router
You can use a combination of wired and wireless connections to link your computers to the network. For example, you can use an Ethernet cable to connect a desktop computer that is right next to the router, but use wireless network adapters to connect your laptop or computers in other rooms. Since network interface cards (NICs) are less expensive than wireless adapters, this is a way to cut the cost of your network hardware. Wired connections are also faster and more secure than wireless connections.
Using Ethernet cables to connect computers
Generally, Ethernet cables connect computers to the wireless network if they are in very close proximity to the router.