You need a router if you have a modem because a modem only connects your home network to the internet. It does not allow devices on your network to communicate with each other. A router, on the other hand, creates a local area network (LAN) within your home, allowing devices to share files and peripherals like printers. The router also manages all the information going to and from each device and the modem and makes sure it all ends up safely in the right spot.

Here are some of the benefits of using a router with a modem:

  • More devices can connect to the internet. A modem can only connect one device to the internet at a time. A router, on the other hand, can connect multiple devices to the internet simultaneously. This is especially important if you have a lot of devices in your home that need to connect to the internet, such as computers, laptops, smartphones, tablets, and smart TVs.
  • Better wireless signal. A router can create a stronger wireless signal than a modem. This is important if you have a large home or if there are walls or other obstacles between your devices and the modem.
  • More security. A router can provide some security for your home network. This is because a router can act as a firewall, which blocks unauthorized access to your network.

If you have a modem, I recommend getting a router as well. It will give you more flexibility and security in your home network.

Here are some additional things to keep in mind:

  • Some ISPs may provide you with a router as part of your internet plan. If this is the case, you may not need to buy a separate router.
  • The type of router you need will depend on your needs and budget. If you have a large home or a lot of devices that need to connect to the internet, you may want to consider a high-end router with a lot of features.
  • You can also buy a mesh router system, which is a group of routers that work together to create a single, seamless wireless network throughout your home. This can be a good option if you have a large home or if there are dead spots in your current wireless network.

I hope this helps!

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