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Yes.

In general, the cable model is required to provide a connection between your location and the cable ISP's central office, whereas the WiFi router is required to share that connection with multiple computers at your location.

ISP <--> Cable Modem <--> WiFi Router <--> Many Computers

Keep in mind that many cable ISPs now offer all-in-one cable modems + WiFi routers that roll up these two devices into one. In this case, having a redundant router will work, but the configuration may be confusing and is most certainly redundant.

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14y ago

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