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Technical Details
- Designed to provide a cost effective, next generation technology to offer a high speed residential or commercial service tier
- User-friendly online diagnostics and bonded channel status page
- Features a 10/100/1000Base-T Gigabit Port for incredible wired network speeds
- Capable of downloading up to 2000 times faster than 56k analog phone modems; up to 4 times faster than DOCSIS 2.0 broadband
- Intuitive, easy to read front panel operational status LEDs
Product Details
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Product Description
From the Manufacturer
Ultra-fast Internet at your fingertips – NEW lightning fast technology lets you surf up to 4x faster than traditional cable modems.
The Motorola SURFboard SB6120 eXtreme Cable Modem unleashes the next wave of broadband technology at exceptional speed. The SB6120 is up to 4 times faster than DOCSIS® 2.0 broadband cable modems making it capable of reaching data rates up to 150 Mbps. That makes gaming, shopping, downloading, working, high-quality voice and video conferencing, and peer-to-peer networking applications — far more realistic, faster, and efficient than ever before. The SB6120 delivers your complete personal media experience, at lightning-fast broadband speed. So what are you waiting for?
 Motorola SURFboard® eXtreme Cable Modem |
 Easy to Install, Activate, and Use. |
Delivers a realistic gaming experience – watch as games come to life
 Watch as games come to life. |
Highlights
- Capable of downloading up to 2000 times faster than 56k analog phone modems
- Capable of downloading up to 4 times faster than DOCSIS 2.0 broadband cable modems
- DOCSIS® 3.0 Certified
- Enables a myriad of advanced multimedia services:
- - Access real-time online games; new heights in realism and speed
- Faster music downloads; one song or the entire album
- Share digital photos, home movies and other multimedia effortlessly over the Internet
- Download high-definition movies to your PC or watch as streaming media
- Windows®, Macintosh®, and UNIX® compatible
- Supports Advanced Encryption Services for data, as activated by your operator
- Features a 10/100/1000Base-T Gigabit Port for incredible wired network speeds: enjoy lag-free network gaming and faster file transfers
- Intuitive, easy to read front panel operational status LEDs
- Use your current Internet Browser
- No additional software required
- Slim design saves desk space
- 2-year limited warranty
What’s in the Box
Inside the Box - Motorola SB6120 SURFboard eXtreme Cable Modem,Quick start guide,Installation CD-ROM,Ethernet cable,Power adapter and cord,Install sheet,Warranty card
Product Description
Ultra-fast Internet at your fingertips - NEW lightning fast technology lets you surf up to 4x faster than traditional cable modems. The Motorola SURFboard SB6120 extreme Cable Modem unleashes the next wave of broadband technology at exceptional speed. The SB6120 is up to 4 times faster than DOCSIS 2.0 broadband cable modems making it capable of reaching data rates up to 150 Mbps. That makes gaming, shopping, downloading, working, high-quality voice and video conferencing, and peer-to-peer networking applications - far more realistic, faster, and efficient than ever before. The SB6120 delivers your complete personal media experience, at lightning-fast broadband speed.
Customer Reviews
Most Helpful Customer Reviews
292 of 300 people found the following review helpful
Amazon Verified Purchase
I was renting a modem from Comcast for $4 per month which really was horrible. The modem would crash, reboot, not work, etc... I spoke to some Comcast tech's on Twitter and they recommended I go and buy this modem since it was not yet being distributed by them in my area. Voila, off to Amazon I went.
I purchased the modem, it arrived the next day. I turned everything off....router, computer, etc. The setup was as follows:
A. Plug cable into new modem.
B. Plug ethernet cable from modem to your computer (first time only).
C. Power up modem.
D. Power up computer.
E. For Comcast - Web page comes up that allows you to change your modem.
F. Enter some details....ie. your account number, etc.
G. DONE....shutdown modem, and plug ethernet cable to Router.
H. Enjoy DOCSIS 3.0
I have had this thing for a few weeks now and it works perfectly well on a daily basis. We are actually getting what we pay for...which was not the case with the old junk that comcast provided. We are getting about 60mbps down and 12mbps up...on a good day.
Motorola has an excellent modem again..
I purchased the modem, it arrived the next day. I turned everything off....router, computer, etc. The setup was as follows:
A. Plug cable into new modem.
B. Plug ethernet cable from modem to your computer (first time only).
C. Power up modem.
D. Power up computer.
E. For Comcast - Web page comes up that allows you to change your modem.
F. Enter some details....ie. your account number, etc.
G. DONE....shutdown modem, and plug ethernet cable to Router.
H. Enjoy DOCSIS 3.0
I have had this thing for a few weeks now and it works perfectly well on a daily basis. We are actually getting what we pay for...which was not the case with the old junk that comcast provided. We are getting about 60mbps down and 12mbps up...on a good day.
Motorola has an excellent modem again..
276 of 302 people found the following review helpful
As I understand it, this is a great modem to use if you have a very expensive, extremely high speed internet package. The reason for this is that it has bonded channels technology that enables you to get more bandwidth (at high speeds) than the Motorola Surfboard 5120 or 5101. So if you have the top of the line internet package, and a very fast computer, and if the cable internet in your area supports DOCSIS 3.0, this thing could work screaming fast for you.
I do not have screaming fast internet, although my computer is pretty bleeding fast. I can't afford that kind of cost for a monthly subscription, because it is a constant and forever drain of a lot of money, and I don't earn that much money where I can do that.
I am located in the Phoenix, Arizona area, and have the $40/month Preferred internet package. My downstream bandwidth varies a lot by the time of day, it ranges between 13Mbps all the way up to about 23Mbps when almost everyone else is in bed sleeping.
My upstream bandwidth is capped real low, as with most consumer internet packages, so it hardly varies at all. It's almost always the same, at about 1Mbps.
If you want an accurate test of your internet bandwidth, do not use the main bandwidth testing sites. Their tests are way too short in duration and give you an extremely exaggerated notion of your top speeds. Go to testmy dot net and use the largest size tests they will allow you to.
Before purchasing this modem from an unnamed extremely large local retailer, I had read lots and lots of reviews saying that this modem dramatically improved the speed of relatively slow connections. I tested my bandwidth both before and after very thoroughly, both upstream and down. In the before part of my tests, I was using a Motorola Surfboard 5120. I saw absolutely no significant difference in either my upstream or downstream speeds after switching in the newer model. The reason this happened is because the 6120 is designed with the bonded channel DOCSIS 3.0 technology that provides you with more bandwidth *in very high speed applications only*.
So, if you have a bleeding fast internet connection, and your internet service provider supports DOCSIS 3.0 in your area, then you could see quite a large improvement in your bandwidth from this modem, according to everything I have read and heard. However, if like me, you cannot afford that speed of connection, you would be much better off saving your money and either keeping your Motorola Surboard 5120 or 5101, or getting one of those instead, since they are less expensive.
I do not have screaming fast internet, although my computer is pretty bleeding fast. I can't afford that kind of cost for a monthly subscription, because it is a constant and forever drain of a lot of money, and I don't earn that much money where I can do that.
I am located in the Phoenix, Arizona area, and have the $40/month Preferred internet package. My downstream bandwidth varies a lot by the time of day, it ranges between 13Mbps all the way up to about 23Mbps when almost everyone else is in bed sleeping.
My upstream bandwidth is capped real low, as with most consumer internet packages, so it hardly varies at all. It's almost always the same, at about 1Mbps.
If you want an accurate test of your internet bandwidth, do not use the main bandwidth testing sites. Their tests are way too short in duration and give you an extremely exaggerated notion of your top speeds. Go to testmy dot net and use the largest size tests they will allow you to.
Before purchasing this modem from an unnamed extremely large local retailer, I had read lots and lots of reviews saying that this modem dramatically improved the speed of relatively slow connections. I tested my bandwidth both before and after very thoroughly, both upstream and down. In the before part of my tests, I was using a Motorola Surfboard 5120. I saw absolutely no significant difference in either my upstream or downstream speeds after switching in the newer model. The reason this happened is because the 6120 is designed with the bonded channel DOCSIS 3.0 technology that provides you with more bandwidth *in very high speed applications only*.
So, if you have a bleeding fast internet connection, and your internet service provider supports DOCSIS 3.0 in your area, then you could see quite a large improvement in your bandwidth from this modem, according to everything I have read and heard. However, if like me, you cannot afford that speed of connection, you would be much better off saving your money and either keeping your Motorola Surboard 5120 or 5101, or getting one of those instead, since they are less expensive.
154 of 172 people found the following review helpful
Amazon Verified Purchase
Like another recent reviewer, this Docsis 3.0 cable modem may not work with Comcast, even though SB6120 is listed as one of the "approved cable modem 3.0" on Comcast's website. Google "sb6120 comcast problem" and you'll find more details.
The comcast technican/installer was at my house and spent 45 minutes trying to make it work. The SB6120 seemed to be having problem syncing with the server and kept getting reset continuously. The technician was on the phone with the support team, and at the end he said it was defective. He put in a comcast supplied 2.0 RCA modem and it worked. Amazon shipped me a different replacement SB6120 4 days later, and the replacement showed the exact same symtom and would continously reset and wouldn't sync. The comcast phone support agent told me they are able to see the device but somehow it still didn't work properly... We swapped the comcast RCA modem in and it worked right away again.
Bottom line is that there appears to be some compatibility issues with Comcast & SB6120, at least for some. I tried two different ones and they both had the same issues. Again, google "sb6120 comcast problem", do your research and make the decision yourself. Unless the batch of SB6120 from amazon is defective, there probably are some firmware or compatbility issues for some of the modems, even though Comcast lists SB6120 as an approved modem...maybe just hit or miss.
Having tried two of these, I am giving up and am now paying more to get a zoom 5341 3.0 modem instead. Good luck and thanks for reading. Hope this helps.
Update: ZOOM 5341 has been running strong after 6 months of use. I have not had a single issue with it and it has been very stable and very speedy(upload/download).
Update(2/28/2012): A few people hinted or complained about my review. They basically said "SB6120 works for them so there must not be any compatibility issue with Comcast". Oh please, I already clearly stated that you "MAY" have incompatibility with Comcast, at least for SOME of the people. As of Feb 2012, there are ~= 1000 five star review on this, and ~= 110 one star review! This clearly indicates ~= 10% of the people are having serious problem with SB6120. At least a significant number of those 1 star review are related to Comcast compatibility issue. I still stand by my review: you mileage may vary with this on Comcast. Good luck everybody!
The comcast technican/installer was at my house and spent 45 minutes trying to make it work. The SB6120 seemed to be having problem syncing with the server and kept getting reset continuously. The technician was on the phone with the support team, and at the end he said it was defective. He put in a comcast supplied 2.0 RCA modem and it worked. Amazon shipped me a different replacement SB6120 4 days later, and the replacement showed the exact same symtom and would continously reset and wouldn't sync. The comcast phone support agent told me they are able to see the device but somehow it still didn't work properly... We swapped the comcast RCA modem in and it worked right away again.
Bottom line is that there appears to be some compatibility issues with Comcast & SB6120, at least for some. I tried two different ones and they both had the same issues. Again, google "sb6120 comcast problem", do your research and make the decision yourself. Unless the batch of SB6120 from amazon is defective, there probably are some firmware or compatbility issues for some of the modems, even though Comcast lists SB6120 as an approved modem...maybe just hit or miss.
Having tried two of these, I am giving up and am now paying more to get a zoom 5341 3.0 modem instead. Good luck and thanks for reading. Hope this helps.
Update: ZOOM 5341 has been running strong after 6 months of use. I have not had a single issue with it and it has been very stable and very speedy(upload/download).
Update(2/28/2012): A few people hinted or complained about my review. They basically said "SB6120 works for them so there must not be any compatibility issue with Comcast". Oh please, I already clearly stated that you "MAY" have incompatibility with Comcast, at least for SOME of the people. As of Feb 2012, there are ~= 1000 five star review on this, and ~= 110 one star review! This clearly indicates ~= 10% of the people are having serious problem with SB6120. At least a significant number of those 1 star review are related to Comcast compatibility issue. I still stand by my review: you mileage may vary with this on Comcast. Good luck everybody!
Most Recent Customer Reviews
Solid as a rock.
I did a lot of research on this product before buying it. One thing you must know, will my ISP (internet service provider) support this device, some don't, luckily mine did. Read more
Published 7 days ago by MdB
Outstanding!
My husband and I love this product. It has been reliable for the amazing price that we paid. The product came very quickly and was packaged very well.
Published 15 days ago by mikjohnsen
SB6120... Comcast Issues.
Im running into the same issue as another reviewer. I'm now getting constant re-boots. Comcast techs said there is nothing they can do even though they support the SB6120. Read more
Published 16 days ago by Nylo
docsis modem
Basically everything was as advertised. I did have an old modem with less capacity than this so it should have worked better and it did. Read more
Published 17 days ago by Raymond A. Broms
Surfboard Rules
Replaced my rented cable modem with this bad boy & now my connection is much faster---highly recommend to buy & quit renting from cable companies... Read more
Published 18 days ago by cookie1607
Awesome
Im glad I purchased this modem it is alot faster than my last one that I was renting from Comcast. Just hooked it up called Comcast gave them the info ion it and within 15 mins I... Read more
Published 20 days ago by Big Guy
Happy Customer
My older modem was acting up, so I did some research On Amazon. I decided to go with this Modem and am very happy with it. Its faster and more reliable. Read more
Published 20 days ago by D. Sampson
No difference from my old modem. :)
Great But I see no difference in speed from my non 3.0 modem. This is probably because Atlantic broadband is going slow but when I check my download speed the 3. Read more
Published 20 days ago by J. F. Pa
amazing
I had Charter to the house several times and they found nothing wrong. My only regret is that I didn't replace the modem a year ago. Read more
Published 22 days ago by S.inTN
Great cable modem
I bought this last year when I got service from Comcast in Seattle. It worked like a charm - no problems, easy install (have to call Comcast and provide them some info). Read more
Published 22 days ago by M. Donohoe
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