Gaming, watching videos, buying music, and web browsing all depend on it.

What Is a Modem, and Why Do I Need One?

However, transmitting the binary zeroes and ones of a data stream over long metal strands isn’t easy.

Most Modems Have One Coaxial Input and (Only) One Ethernet Output

Zoom Telephonics / Amazon

Zoom Telephonics / Amazon

Instead, the signal is sent as either high or low.

These are translated to the ones and zeroes that computers expect.

On its own, a modem connects your home to that outside online grid.

For 2-in-1 Devices, Note the Coaxial Input, and the Multiple LAN Ethernet Outputs

Motorola, Inc. / Amazon

It is identified by yourIP address, which yourinternet service providerassigns.

That’s where a router comes in.

What Is a Router, and Why Do I Need One?

Arouterfocuses on local area networking.

Using 2-in-1 Modems/Routers

Modems and routers don’t need to be separate physical devices.

Some modems support built-in routing capability.

Furthermore, a single equipment may be less expensive than buying a modem and router.

Most modern cable and DSL providers offer gateway modems by default.