Most AT&T modems have several available Ethernet ports. These are yellow ports found on the back of your equipment. Simply connect an Ethernet cable from the Ethernet port on your computer to any available Ethernet port on the back of your modem. Your modem may vary from the image shown.
With a DSL gateway, you can connect with an Ethernet cable or through Wi-Fi.
Wired connection
Wired connections connect an Ethernet cable from an available port on your gateway to your computer. Your gateway may vary from the image shown.
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Wi-Fi connection
Connecting through your Wi-Fi network gives you the availability to have multiple computers connected around your home. Before trying to connect your computer wirelessly, be sure: