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networking - How to connect internet modem/router combo to a router, but keep it working as a network switch? - Super User
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Amazon.com: NETGEAR Nighthawk Modem WiFi Router Combo C7000-Compatible with Cable Providers Including Xfinity by Comcast, Spectrum, Cox for Plans Up to 800Mbps | AC1900 WiFi Speed | DOCSIS 3.0
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Amazon.com: NETGEAR Cable Modem WiFi Router Combo C6220 - Compatible With All Cable Providers Including Xfinity by Comcast, Spectrum, Cox | For Cable Plans Up to 200 Mbps | AC1200 WiFi Speed | DOCSIS 3.0 : Electronics
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Can I hook up an extra router to my existing unit that is already a combination modem/router? - Quora
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