How do I connect a Mac to the Internet via Ethernet?

Connect your Mac Ethernet Internet avoids Wi-Fi problems and unleashes the speed. Indeed, the internet speed of the Wi-Fi is restricted, unlike the Ethernet connection. If simply connecting your Mac to your router isn’t enough, you’re going to need to do some network setup.

What is a router? How to connect it to the Mac?

First of all, you are going to have to connect your Mac to your router. The router, or modem, is a box connected to your internet wall outlet. It is this box that will allow you to have internet. Indeed, it sends packets from a network interface to a other. This is called packet routing.

In most cases, the router is the internet box provided by your Internet Service Provider (ISP).

To connect your Mac to the router, simply connect them together with an Ethernet cable (also called RJ45).

Connect a Mac to the Internet via Ethernet

Often, linking them is not enough. In this case, a quick tour of the network settings of your Mac is necessary:

  • go to > System Preferences > Network ;
  • click on Ethernet in the left list;
  • click on the “Configure IPv4” drop-down list and make a choice according to your situation and that of your ISP:
    • Via DHCP in case you have received an IP address automatically from your ISP,
    • Using DHCP with a Manual Address if you have received a specific IP address,
    • Via BootP if your ISP uses this protocol,
    • Manually to enter a specific IP address, subnet mask, or router address;
  • on this same window, click on Advanced ;
  • go to the tab DNS ;
  • under the “DNS servers” section, click on the + to add one;
  • enter the address provided by your ISP and, if applicable, search domain addresses;
  • if your ISP has given you more data, it is in its tabs that you will make all the necessary settings;
  • validate your settings with OKAY.

You still do not have access to the internet or are you still connected to the Wi-Fi network despite settings?

Prioritize the Ethernet connection

If you’re still having problems, it’s probably because you’ve already connected to this network (or one nearby) via Wi-Fi. In this case, there’s a good chance your Mac is still connected to it. Indeed, once connected to a network, it will connect to it in priority, even if your Ethernet cable is connected. To give priority to the Ethernet connection, go back to the network settings:

  • go to > System Preferences > Network ;
  • click on Wireless in the left list;

And there you have several choices:

  • click on Turn off Wi-Fi ;


  • select the network in the “Network name” list and uncheck Automatically connect to this network ;


  • click on Advanced to uncheck Automatic connection on the networks of your choice and validate with OKAY.

If your Mac doesn’t have a USB port, you can get a Thunderbolt or USB-C to Ethernet adapter.


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