Can I use Nighthawk AC1900 WiFi Cable Modem Router ONLY for wifi?

Question

I have a Nighthawk AC1900 Wifi Cable Modem router for both the cable tv and internet I was getting from Xfinity.&nbsp; We are about to drop cable tv and just keep internet from Xfinity.&nbsp; I can't get a straight answer about whether or not I can use this cable modem router JUST for internet?&nbsp;&nbsp;Right now I have&nbsp; this set up:&nbsp;&nbsp;&nbsp; CABLE BOX:&nbsp; 1 cable to Coax in cable modem&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1 hdmi cable to smart TV&nbsp;If I&nbsp; get rid of the cable box how do I rewire this just for wifi?&nbsp; Someone mentioned an ethernet cable. And do I need to do anything to 'switch off' the cable part from the cable modem as I've read in various places?&nbsp;If anybody can answer this (and if you were explaining it to a 5 year old that would be great!) I'd really appreciate it!thanks!&nbsp;

FURRYe38 · Answer

What is the brand and model# of the cable box?&nbsp;
You have TV thru the ISP then the cable box will be needed.&nbsp;
You can use the C series gateway modem as your main internet modem from the ISP to your home. This would need to be on a separate ISP coax cable line from the cable box for the TV services.&nbsp;
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Teapot6761 · Answer

It's a Samsung SX022ANC

FURRYe38 · Answer

C series gateway modems can only be used in gateway mode connected to a ISP cable connection or in modem only mode, as this disables the router and WiFi portion of the modem.

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Can I use Nighthawk AC1900 WiFi Cable Modem Router ONLY for wifi?

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