Nighthawk AC1900 router, do i need a modem if I only am using Xfinity for Wifi?

[tnterens]

Moving into a new place. Just bought this router. Declined to rent modem from Xfinity in hopes to save some money in the long run. I am only using Xfinity for Wifi. Do I need a modem as well or will this Nighthawk AC1900 do the trick since Xfinity now have Fiber Optic capabilities?

[FURRYe38]

Yes. 

Please post about this here for your model router:
https://community.netgear.com/t5/General-WiFi-Routers-Non/bd-p/home-wifi-routers-general

Good Luck. 

[antinode]

> [...] Do I need a modem as well or will this Nighthawk AC1900 do the
> trick since Xfinity now have Fiber Optic capabilities?

   Ask the ISP which sort of termination they provide?  If it's coaxial
cable, then you'd need a cable modem; if it's Ethernet, then I'd expect
a direct connection to work.

   Almost everyone has "Fiber Optic capabilities". The question is to
what _you_ will be connecting _your_ stuff, not what your ISP uses for
its cross-town trunks.