Smart wi fi extender smart wi fi extender.
At t green data cable replacement.
Dsl gateway model 7550 dsl gateway model 7550.
Used to connect to the dsl phone connection.
Connect the black power cord to the back of your gateway and plug it into an electrical outlet.
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Installerparts ethernet cable cat6a cable utp booted 3 ft green professional series 10gigabit sec network high speed internet cable 550mhz.
If you are speaking of a at t dsl gateway combo dsl modem and router there are two or more cables.
Most likely black and connected to a power supply cord.
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The color of the cable is irrelevant.
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Wait for the at t gateway to power up.
Your at t equipment package comes with color coded wiring which matches up with color coded ports on your gateway.
Plug the green data cable into the green broadband dsl port and your wall jack if you use traditional phone service it will plug into your dual port filter.
Connect the other end to the at t broadband jack in your wall.
Data cable 14 category 5 w rj 11 connectors data cable 14 category 5 w rj 11 connectors.