What Is a Router? Think of a Mailroom

A router is a device that helps information travel between networks. At home, it helps your devices reach the internet connection.

Your home has several destinations

Your laptop, phone, and printer can each have their own network address. The router directs traffic between your home network and other networks, such as the internet. Many home routers also include equipment that connects devices within your home.

For the address part of the comparison, read What Is an IP Address?.

Is the router the Wi-Fi?

Many home routers include a Wi-Fi access point. That is the part that lets devices connect wirelessly. They may also have Ethernet ports for devices connected by a cable.

Because those jobs often live in the same box, people call the whole thing “the Wi-Fi.” But Wi-Fi is the wireless connection, while routing is the job of directing traffic between networks.

Is a router the same as a modem?

They do different jobs. A modem connects to certain types of internet service, such as cable service. A router connects networks and helps your home devices use that connection.

Your provider might supply one box that combines both jobs. A fiber connection commonly uses a different connection box, called an ONT, rather than a cable modem. You do not have to memorize these names—just know that the setup varies.

Does buying a router give me internet service?

No. You still need an internet connection from a provider. A new router cannot fix an outage outside your home or create an internet subscription.

Where should it go?

For a router providing Wi-Fi, a reasonably central, open location often works better than hiding it in a cupboard. Walls, distance, and interference can affect the signal. Follow the equipment’s ventilation instructions.

Restart is different from reset

Restarting turns equipment off and back on. A factory reset can erase your settings. Do not press a reset button just because a website will not load.

Start with Wi-Fi Not Working or Wi-Fi Connected but No Internet for troubleshooting.

Remember: The router helps direct network traffic. Its built-in Wi-Fi lets nearby devices connect without a cable.

Wi-Fi vs. the Internet · More beginner guides