These are the most popular options. From the modem, talked about here in “Internet Service Provider (ISP)”, to your router. On your router, you will find some more ethernet ports including one line in, from your modem, and some other line outs, which you can use for a wired connection for your computer, tv, server, or another router. The consumer standard for the number of ethernet ports on your router is four. Not only can you plug in your wired network-enabled devices but you can also connect to your wireless network-enabled devices, like your phone or tablet, to your router using its broadcasting signal.