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Looking for Answers about Motorola ARRIS/Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem?

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Questions with Most Recent Answers
Question:
does this work with cox communcation
Question:
Can this unit accept wifi internet from USB adapter and enable LAN ethernet port on desktop PC.?
Question:
Will it work as a Windstream DSL modem?
Question:
N300 USB Adapter / is it compatible with windows 8.1?

Customer Questions & Answers for
Motorola ARRIS/Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem

The Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem unlocks the potential of offering innovative high-bandwidth data and multimedia services. Utilizing the power of DOCSIS 3.0, the SB6121 enables channel bonding of up to four downstream channels and four upstream channels, which allows an operator to offer their customers advanced multimedia services with data rates of well over 100Mbps in each direction. The Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem provides an economic option for providing Ultra-Broadband services, with four times the current maximum user data throughput approximating 160Mbps in DOCSIS mode and 195Mbps in EuroDOCSIS mode, without the need for hybrid fiber coax (HFC) plant upgrade. Maximizing an operator's current infrastructure investment, the SB6121 can be deployed without service interruption.
Customer Questions & Answers:
101 Questions
 | 
384 Answers
Overall Rating:
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Product Details

Questions & Answers for Motorola ARRIS/Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem

Question

Can this be used with cableone?

asked 1 year, 4 months ago
By
crj
on ARRIS/Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem
2 answers
Answers
answer 1
Yes
answered 11 months ago
By
Cryptkeeper
answer 2
Not sure, but if they need a DOCIS 3.0 modem, this should do the trick.
answered 1 year, 1 month ago
By
ranman66
Question

Does this model have Coaxial Cable; I saw that there was only Ethernet and Power Cable in the Kit?

asked 2 years ago
By
Dev
on ARRIS/Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem
10 answers
Answers
answer 1
No. The coax is the cable your internet provider runs to you house.
answered 1 year, 6 months ago
By
jww62
answer 2
The coaxial cable is the one that comes through the wall and provides your cable service. This modem has the jack to connect that cable.
answered 1 year, 9 months ago
By
pffffffffffft
answer 3
You will need to purchase the coaxial cable seperatly. Measure the distance from hook up to you computer to make sure you buy a long enough cable.
answered 1 year, 10 months ago
By
nannerkz
answer 4
there is no coaxal cable in this kit, must purchase seperate!!!
answered 1 year, 11 months ago
By
DonHam
answer 5
The product does nto come with the Coaxial Cable.
answered 1 year, 11 months ago
By
Malcolm59
 - Southampton, NJ
answer 6
it does not come with a coax cable, you must provide your own.
answered 1 year, 11 months ago
By
Hanztertonfield
 - NJ
answer 7
No. The cable company usually supplies the coaxial cable
answered 1 year, 11 months ago
By
Throckmeister
answer 8
Yes, there is a coax connection on this model.
answered 2 years ago
By
TheGuynMD
 - Baltimore, MD
answer 9
According to the spec sheet there is an "F" connector which means yes, coaxial cable can be connected to this modem. This would be expected since this is a cable modem.
answered 2 years ago
By
an anonymous customer
 - Oak Creek, Wis.
answer 10
No coaxial cable.
answered 2 years ago
By
salem974
 - Peoria, IL
Question

Does the Motorola modem sb6121 have a router built in?

asked 2 years, 1 month ago
By
garry1988
on ARRIS/Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem
9 answers
Answers
answer 1
No. If you want to connect it to more than one computer you will need a router.
answered 1 year, 9 months ago
By
pffffffffffft
answer 2
no, this is a cable modem that will plug into your computer. If you want to be wireless you will need to buy the wireless router seperately
answered 1 year, 10 months ago
By
nannerkz
answer 3
No It Doesn't have a router as Walmart advertised, I am so glad my Apple Extreme Wireless Router Does have ports!!!!
answered 1 year, 11 months ago
By
DonHam
answer 4
Not this model.
answered 1 year, 11 months ago
By
Malcolm59
 - Southampton, NJ
answer 5
this model does not have a built in router.
answered 1 year, 11 months ago
By
Hanztertonfield
 - NJ
answer 6
No it does not. You will need to plug this modem into a third party router i.e. Linksys, D-Link, Netgear
answered 2 years ago
By
netrrhexis
answer 7
Not this one but I was reading that Moto has one combo unit modem/ router but the reviews are not that good and is more pricey ...
answered 2 years ago
By
EVegas
 - North west Las Vegas NV
answer 8
Nope, this is a cable modem only. You can of course connect your choice of wireless router. cheers.
answered 2 years ago
By
johnetx
 - west texas
answer 9
Nope, this is a modem only, of course you can connect your choice of wireless routers. Cheers.
answered 2 years ago
By
johnetx
 - west texas
Question

Does this have a built in phone jack?

I need a modem that has that capability since my phone co uses cable thru' a modem.
asked 2 years, 1 month ago
By
mustangchar
 - Fosyth, Mo
on ARRIS/Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem
8 answers
Answers
answer 1
It has an rj-45 jack, which is a standard telephone jack.
answered 1 year, 9 months ago
By
pffffffffffft
answer 2
It has 3 plugs. 1 to hook coxial cable, 1 for the power cord and one for the ethernet cord that will plug to other divices such as a computer.
answered 1 year, 10 months ago
By
nannerkz
answer 3
No, If your on TWC you keep the TWC issued modem at no charge for your phone service and the SB6121 modem will now be your internet modem!!!
answered 1 year, 11 months ago
By
DonHam
answer 4
No
answered 1 year, 11 months ago
By
Malcolm59
 - Southampton, NJ
answer 5
this modem does not have a phone line.
answered 1 year, 11 months ago
By
Hanztertonfield
 - NJ
answer 6
No phone jack
answered 2 years ago
By
EVegas
 - North west Las Vegas NV
answer 7
Yes, I have Vonage and it goes through the Internet also.
answered 2 years ago
By
samdu
 - Detroit, MI
answer 8
No, this is strictly a cable modem. Note - this is NOT compatible with dsl or Uverse.
answered 2 years ago
By
johnetx
 - west texas
Question

Does this modem work's with Comcast?

asked 1 year, 11 months ago
By
CH
on ARRIS/Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem
7 answers
Answers
answer 1
Yes.
answered 1 year, 9 months ago
By
pffffffffffft
answer 2
works fine with Comcast
answered 1 year, 9 months ago
By
dhgott
answer 3
This modem will work on any cable TV system that provides internet over the coax cable connected to the home. It will not work on DSL internet provided over phone lines such as provided by CenturyLink.
answered 1 year, 11 months ago
By
Tex999
 - Mesa, AZ
answer 4
Yes
answered 1 year, 11 months ago
By
Malcolm59
 - Southampton, NJ
answer 5
Yes it works with Comcast.
answered 1 year, 11 months ago
By
Malcolm59
answer 6
It should because it is a DOCSIS 3.0 Cable Modem but be sure to call Comcast to be a 100 percent sure. It is a great modem, I love it.
answered 1 year, 11 months ago
By
Mrclutch1987
 - Roanoke, VA
answer 7
yes. in south nj it does, and likely everywhere. I installed mine a couple weeks ago and it works great. just be patient on initial start up where a comcast rep adds it to the network. it is on their list of accepted modems, and they rank it high for compatibility.
answered 1 year, 11 months ago
By
Hanztertonfield
 - NJ
Question

does it have a phone jack?

need modem for time warner with cable,ethernet, and phone jacks
asked 1 year, 10 months ago
By
russ
on ARRIS/Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem
7 answers
Answers
answer 1
No, it does not have a phone jack (RJ-11). Ethernet (CAT5), Cable (coaxial) and power adapter connections only.
answered 1 year, 9 months ago
By
qcoats
answer 2
This modem does NOT have a phone jack. Ethernet, Cable (coaxial) and power jacks only.
answered 1 year, 9 months ago
By
qcoats
answer 3
Yes, it has a standard rj-45 phone jack.
answered 1 year, 9 months ago
By
pffffffffffft
answer 4
NO
answered 1 year, 9 months ago
By
WESTERNHILLS
answer 5
No.
answered 1 year, 10 months ago
By
Kelita909
answer 6
No phone jack just Ethernet
answered 1 year, 10 months ago
By
Timdoggg
answer 7
No, this modem only has an ethernet jack
answered 1 year, 10 months ago
By
elcheapo1953
Question

Do you have to have existing cable service? Looking to get internet service through this modem..

asked 1 year, 11 months ago
By
Leelee
on ARRIS/Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem
7 answers
Answers
answer 1
Yes
answered 1 year, 6 months ago
By
jww62
answer 2
Yes, you must subscribed to a broadband ISP (internet service provider).
answered 1 year, 8 months ago
By
Cyberodney
answer 3
Yes, you need cable service, the modem will not magically provide free internet.
answered 1 year, 9 months ago
By
pffffffffffft
answer 4
Most Cable Companies Offer Internet only for a higher price per month
answered 1 year, 10 months ago
By
elcheapo1953
answer 5
Depends on the provider. I have Cox and only have the internet with them.
answered 1 year, 10 months ago
By
nannerkz
answer 6
Yes, you should have cable service and after installing, call your cable service to give them the numbers they need to make sure it is hooked up and ready for you to go on the internet.
answered 1 year, 10 months ago
By
angelblossoms
answer 7
work perfect with comcast cable internet
answered 1 year, 10 months ago
By
neatrose
Question

Do I need a battery for this?

asked 4 months, 3 weeks ago
By
karris
on ARRIS/Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem
6 answers
Answers
answer 1
No. Your power goes down, your internet connection goes down.
answered 2 months, 1 week ago
By
rziesiwi
answer 2
Nope, just plug it in.
answered 2 months, 1 week ago
By
Nina992
answer 3
This router does not come with a 9v battery backup like other routers do. It's only source of power comes from the wall charger.
answered 3 months, 1 week ago
By
TonyTechie
answer 4
No.
answered 4 months, 2 weeks ago
By
Flyfisher1972
answer 5
No battery needed.
answered 4 months, 2 weeks ago
By
ChaoticMayhem
answer 6
This modem plugs into the wall and does not need batteries.
answered 4 months, 3 weeks ago
By
CommunityAnswer
Question

Is this model compatible with Time Warner Cable internet service?

asked 1 year, 1 month ago
By
sami
on ARRIS/Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem
6 answers
Answers
answer 1
Yes. If you go to TWC website, it will tell you which service it works with. We have the basic service and this was one of the modems suggested. If you have an upgraded service, you want another one, but the website gives you suggestions.
answered 11 months ago
By
djmelmom
answer 2
Yes, I use it with a Netgear router. It works fine with TWC.
answered 11 months ago
By
gifts96
answer 3
yes, works for me!
answered 11 months ago
By
unknown2014
answer 4
Yes, it can be found on there compatibility list.
answered 11 months ago
By
Diamond70
answer 5
Yes. You'll probably get a faster connection when you swap out the Time Warner modem for this too! I did.
answered 1 year, 1 month ago
By
NicknamesTakenByOthers
answer 6
Yes, it even works better then there's and when I called to get this one going I had a tech named Joe,he really was good and in less then 20 minutes it was all done and I was good to go.
answered 1 year, 1 month ago
By
thelady65
Question

Is it wireless technology & Comcast compatible

asked 1 year, 10 months ago
By
Al
on ARRIS/Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem
6 answers
Answers
answer 1
you hook a wireless router to the modem and works with comcast very well
answered 1 year, 9 months ago
By
jamielynn
answer 2
Yes. We have comcast, and a wireless network. Works fine.
answered 1 year, 9 months ago
By
pffffffffffft
answer 3
I use it with comcast service, I had to initially plug it into one of my laptops to get it up and running. After about an hour to ensure the connection I plugged it into my wireless router, and everything worked great.
answered 1 year, 9 months ago
By
dhgott
answer 4
Wired techology only and I have it hooked to Comcast. Self install went very quickly and easily. Did not have to get on phone w/ comcast.
answered 1 year, 9 months ago
By
elcheapo1953
answer 5
I use this modem with Comcast cable internet and work good and fast, but you need plug in wire- work only if is wired
answered 1 year, 9 months ago
By
MarekB
answer 6
Not wireless, but yes it is Comcast compatable in Portland, OR.
answered 1 year, 9 months ago
By
freemand1
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