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bwwhite's avatar
bwwhite
Aspirant
Apr 17, 2018

Nighthawk C7100V was working fine, then I upgraded Xfinity Internet speed and speed tanked

Cable modem / router is Nighthawk AC1900 C7100V. Firmware 2.01.33. Windows 10.   Xfinity recently sent me an email that my 4.5 year old Arris cable modem did not support the higher internet speed t...