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I run two routers at home, and it's not for the reason you think

While they can function as an access point, an extra router has far more utility than that ...
AOL

Why Some Routers Have Two Networks (And What They Mean)

You may notice that your Wi-Fi router comes with two network options: 2.4 GHz and 5 GHz. It's a feature most modern routers offer and is known as a dual-band network. Called frequency bands, both ...