C7800 - Nighthawk X4S - AC3200 WiFi Cable Modem Router_AT&T Fiber

[esoterra]

Greetings, I have the C7800 - Nighthawk X4S - AC3200 WiFi Cable Modem Router being used currently with Xfinity. The Nighthawk was purchased May2018. I am moving into an AT&T Fiber area. I would like to know if this Nighthawk can be used with the AT&T Fiber service. I assume the fiber connections come into the home and is converted to a coax connection but have not been able to verify. Even if this is true will the router be able to read the fiber signal? I appreciate anyone's help or experience. Sean ...somewhere between asleep and awake...

[antinode]

> [...] I assume the fiber connections come into the home and is
> converted to a coax connection but have not been able to verify.

   I know nothing, but I'd assume that the fiber would be converted to
Ethernet rather than any cable-TV signal, and I see no Ethernet
WAN/Internet port on the C7800.  But AT&T should know what they provide.