posted this on r/AskElectricians and they said it was muffed up, and to come here. all the ethernet ports are dead in my home, and I just want the one in my bedroom to work for use with a computer

red labeled cord says “data line from modem”

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[–] [B] 1 point 2 years ago

This will give you an overview of what need and how to set it all up. There's a lot of info so kick back

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