Many times, your ISP will require you buy a wireless router separately.
This Ethernet port connects the wireless router to the Internet.
Your computers may then connect to the wireless router, wiring a PC directly to the Internet.
The router, however, must remain wired to the Internet.
What should be plugged into a router?
To connect a router to your computer with an Ethernet connection: Plug one end of an Ethernet cable into your modem. Plug the other end of that Ethernet cable into the Internet, Uplink, WAN, or WLAN port on your router. Plug in your router.
Can I plug my computer into the modem?
As you’ve discovered, you can, in fact, just plug your computer directly into your broadband modem and start browsing the internet. Your desktop computer is linked directly to the modem which is in turn connected directly to your ISP and the greater internet.
What does a router do for a computer?
A router is a networking device that forwards data packets between computer networks. Routers perform the traffic directing functions on the Internet. An example of a router would be the owner’s cable or DSL router, which connects to the Internet through an Internet service provider (ISP).
Do you need a desktop computer to setup a wireless network?
To connect your portable or desktop PC to your wireless network, the PC must have a wireless network adapter. Most laptops and tablets—and some desktop PCs—come with a wireless network adapter already installed.