Step 1: Verify you have a Network Interface Card (NIC) installed
A 10/100/1000 Gigabit network interface card (NIC) is required for each computer you are connecting to your home network. An Ethernet cable will connect an available port in the back panel of the router to the NIC in your computer.
Before you can add a computer to your network, you must verify it has a NIC installed by using Windows Device Manager.
Note: Network Interface Cards are also called Ethernet adapters.
If you don't have a NIC, you can: