ARRIS / Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem Ratings and Comments

ARRIS SB6121

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Topic: SB6121
5/5 (2)
 
sai says...
Using this modem for many years but recently getting slow internet speed while connected to vpn. it works fine when not connected to vpn. is that problem with firmware ?? how to get and update the firmware??
Lawrence (Aurora) says...
I just bought this modem and am now enjoying all that this modem was designed to produce.It is fast and stable.
Tracy (Indianapolis) says...
TWC will not support customer owned modems in our area. I have to return this now even though the TWC modem is *****. With five family members on this network, the speed is terrible.
Rich (Richmond) says...
I would look at other issues other than the speed of the modem. The modem says it can handle 170+Mbs downstream and most people usually only have a 50 Mbs or less connection. It's likely you have too many wifi devices connected to a router that can't handle the thru-put. However, TWC is a big evil company.. hated it when I had them.
aglockd (Dothan) says...
Tracey. I will comment on TWC. You are on target with your comment about TWC. They thrive on their Monopoly in some areas. They changed their policies towards customer relations service about the same time the changed their regional operations areas to North Carolina. I think that geographic change speaks for its self.
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See every approved retail modem's price and features in an easily sorted and searchable table:

Comcast

Comcast Business

Cox

Spectrum

Cable ONE

Suddenlink

Time Warner/Road Runner/Bright House


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