On some iMac models, the Ethernet port is located on the computer’s power adapter. If your power adapter doesn’t have an Ethernet port, you can use an Ethernet adapter.

Connect your Mac to the internet using Ethernet

1. Use an Ethernet cable to connect your computer’s Ethernet port to a modem or other network device (for example, a switch or a router).
2. On your Mac, choose Apple menu > System Preferences, then click Network.
3. Select Ethernet in the list on the left.

No. The Mac does not have a modem. You need the modem.

Connect your Mac to the internet using Wi-Fi

1. On your Mac, click the Wi-Fi icon in the menu bar, then choose the network you want to join. If you don’t see the network you want to join, click Other Networks to display nearby networks.
2. If requested, enter the password for the network, then click Join.

The first thing to do is to restart your MacBook and your wireless router. You should restart your router even if other devices can connect to the Internet. If you haven’t already, try connecting your MacBook to a different Wi-Fi network. If you can, the problem is with your personal network.

You can check the status of your network connection, such as Ethernet or Wi-Fi, using Network preferences. The information you see here may be useful if you are troubleshooting a connection problem. On your Mac, choose Apple menu > System Preferences, then click Network.

Typically, they won’t conflict, even if you have two or more interfaces connected to the same network, such as Wi-Fi and ethernet. You can pick the order that OS X consults network interfaces. But you can choose the order in which OS X access your local network and the Internet.

Wi-Fi doesn’t need to be turned off when using Ethernet, but turning it off will ensure that network traffic isn’t accidentally sent over Wi-Fi instead of Ethernet. It can also provide more security as there will be fewer routes into the device.

Click the Start and then click the Programs folder. Next, click the Accessories and then the System Information folder. In the System Information window, click the + symbol next to Components. Click Modem and in the right side of the window you’ll see the complete information about the modem.

A good internet speed is at or above 25 Mbps. These speeds will support most online activity, such as HD streaming, online gaming, web browsing and downloading music.

A good download speed is at least 25 Mbps, and a good upload speed is at least 3 Mbps. Some people can get away with fewer Mbps and others need more—but that’s a good internet speed for most people.

A gigabit is one thousand times bigger than a megabit, which means gigabit internet (1,000 Mbps or faster) is one thousand times faster than megabit internet. Most major internet providers now offer gigabit plans, but they’re overkill if you don’t need blazing fast speeds.