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Generally speaking you can't replace ATT devices with off the shelf routers like this. The ATT device in your house is also a modem, if I were you, I would research the difference between those 2 things and ask ATT if you can provide your own devices because there are modem/routers that you could theoretically replace it with, however some ISPs will still not allow you to do it (its part of their contract).
Sorry, there was a problem. Please try again later.haswan & lan connections
Sorry, there was a problem. Please try again later.It is however you can plug this router to your other to optimize the current routers connection speed and prioritizing
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