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Motorola SB6120 DOCSIS 3.0 Cable Modem
Motorola SB6120 DOCSIS 3.0 Cable Modem
Motorola SB6120 DOCSIS 3.0 Cable Modem
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Arris TM822G DOCSIS 3.0 Telephony Cable Modem
Arris TM822G DOCSIS 3.0 Telephony Cable Modem $32.49

Motorola SB6120 DOCSIS 3.0 Cable Modem

Rated 4.70 out of 5 based on 70 customer ratings
(70 customer reviews)

$29.49

  • DOCSIS 3.0 Cable Modem Only – Wireless Router Sold Separately
  • User-friendly Online Remote Management & Diagnostics Panel
  • 4×4 Channel Bonding Supports Wired Download Speeds up to 160 Mbps
  • Compatible with Comcast Xfinity Services & Sparklight
  • 1 Gigabit Ethernet Port + 1 Coaxial F Connector + Power Supply Port

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  • Description
  • Additional information
  • Reviews (70)
  • About Arris
  • Shipping & Delivery
Description

Motorola SB6120 Product Details

The easy-to-use Motorola SB6120 SURFboard eXtreme Cable Modem unlocks the potential of offering innovative high-bandwidth data and multimedia services to customers. Utilizing the power of DOCSIS 3.0, the SB6120 enables channel bonding of up to 4 downstream channels and 4 upstream channels, which allows an operator to offer their customers advanced multimedia services with data rates of well over 100 Mbps in each direction. Strengthen your broadband leadership by counting on the Motorola SB6120 to help you deliver innovative, ultra-broadband services to your premium customers.

 

Motorola SB6120 Compatibility & Speeds

The SurfBoard Motorola SB6120 cable modem is compatible with Comcast service in most areas. Please contact your provider before ordering from us to ensure that this model will work with your service plan and be able to activate in your area. The SB6120 supports download speeds of up to 160 Mbps. Connect a wireless router to this powerhouse and supply your whole home with high-speed WiFi too.

What’s Included:

  • Motorola SB6120 Cable Modem
  • Ethernet Cable
  • Power Supply Cable
  • Online Installation Manual

Will this work with my internet company?

This Arris modem is primarily used and is compatible with Comcast service in most areas. To verify that this model will work in your area, always contact your service provider’s customer service prior to placing your order with us to confirm that this model will work with your service plan. Some service plan speeds may not be supported.

Additional information
Weight 1 lbs
Dimensions 9 × 6 × 3 in
Brand

Arris

Condition

Grade A – Certified Renewed

Contents

Ethernet Cable, Modem, Power Cable

Interface

Cable Modem

Internet Speed

100 Mbps -140 Mbps, 40 Mbps – 60 Mbps, Up to 10 Mbps, Up to 20 Mbps

DOCSIS Version

DOCSIS 3.0

Model Number

SB6120

Color

Black

Ethernet Ports

1-Port

DOCSIS Channels

4 x 4

Compatible Providers

Comcast Xfinity

Features

Easy-Installation, For Home, Video Streaming

Internet Plan

Sparklight 50

Reviews (70)

70 reviews for Motorola SB6120 DOCSIS 3.0 Cable Modem

  1. Rated 3 out of 5

    Jud – April 22, 2016

    Decent modem/router for smaller, more open residences. Worked great for 2 years, then started to have issues with it when it had walls and appliances to send a WiFi signal through. You’d probably be better off getting the modem-only version of this and a good router.

  2. Rated 5 out of 5

    Customer – April 28, 2016

    Great product.Fast shipping

  3. Rated 5 out of 5

    FloridaLady – May 1, 2016

    Does the job and saves on rental fees for provider’s equipment.

  4. Rated 5 out of 5

    JROB – May 12, 2016

    Great company, great product!

  5. Rated 5 out of 5

    Zeta Syanthis – May 14, 2016

    Rock-solid after all these years. I’d give it a 6/5 if I could.

  6. Rated 5 out of 5

    D Blair – June 1, 2016

    This review is for the Motorola Surfboard SB6120 modem.This modem was one of the best modems I’ve ever owned (only topped by the newest model in my opinion)I used this modem for about 6 years and got blazing fast speeds from it.Not once did I have an issue that was attributed to the modem (but as for the provider…TWC that’s another story)I highly recommend no only this particular modem (yes, still) but also this brand of modems. They provide the best, fastest, most reliable modems on the market IMO.

  7. Rated 5 out of 5

    J. Wates – June 1, 2016

    5 years and still kicking. I’ve since upgraded but I gave this one to my father and he loves it. Way better than anything you could get from comcast.

  8. Rated 5 out of 5

    Benjamin – June 2, 2016

    Worked well for the past two years and shows no hiccups or signs of stopping. I would expect to stick with SURFboards in future as technology shifts.

  9. Rated 5 out of 5

    Customer – June 2, 2016

    This has been a reliable workhorse in our household, no issues.

  10. Rated 5 out of 5

    Customer – June 4, 2016

    it works great…thanks alot

  11. Rated 5 out of 5

    Danielle Flynn – July 6, 2016

    I love having this modem and not having to pay Comcast a monthly rental fee!

  12. Rated 5 out of 5

    roy hooper – July 18, 2016

    This product is great , even made my C P faster

  13. Rated 5 out of 5

    Lev Zeldin – July 21, 2016

    It works just fine

  14. Rated 5 out of 5

    Ashley – July 22, 2016

    It works great! I got mine used. I had no issues hooking it up and my Internet connection seems to be pretty stable. It was also a great price. I would highly recommend if you don’t want to spend a lot of money getting one through your cable company, to get this used. You will save a lot of money. I’m not sure about all cable companies but for Time Warner this was one of the few that they approve of to use Internet through their service.

  15. Rated 3 out of 5

    sandra – July 28, 2016

    Once connected it said there wasn’t much life left in it.

  16. Rated 5 out of 5

    Customer – July 30, 2016

    This product was very nice. Thank you

  17. Rated 5 out of 5

    A. Jackson – August 10, 2016

    Bought it years ago. It saved me a lot of money over renting Comcast’s unit. It still works, I’d buy another and recommend it to a friend

  18. Rated 5 out of 5

    Allen Z – August 14, 2016

    Great Price!

  19. Rated 5 out of 5

    Jeslokin – August 24, 2016

    Great product. Fast delivery.

  20. Rated 5 out of 5

    CV – August 26, 2016

    Product works great. Absolutely no complaints.

  21. Rated 5 out of 5

    Frank Rodriguez – September 1, 2016

    THEY ARE WORKING SUPERLY

  22. Rated 5 out of 5

    Julian Williams – September 6, 2016

    still going STRONG

  23. Rated 4 out of 5

    Fucheng Li – September 8, 2016

    Works. But still need to unplug and reconnect every few days to refresh, to continue work for internet connection. Includes cable, power line all have to be reconnected.

  24. Rated 5 out of 5

    CS – September 9, 2016

    Works great

  25. Rated 5 out of 5

    Dustin Atlas – September 10, 2016

    Works well, better than renting from Time Warner.

  26. Rated 5 out of 5

    me – October 4, 2016

    great seller! would buy again!

  27. Rated 5 out of 5

    Customer – October 20, 2016

    very good

  28. Rated 5 out of 5

    H. R. Pierce – October 29, 2016

    .. WORKS GREAT ..

  29. Rated 5 out of 5

    TJ – November 7, 2016

    I have had this modem since 2009. Lived in 5 different places. Worked great at every location. Xfininty/Comcast supposedly don’t support this modem anymore but mine still works.

  30. Rated 5 out of 5

    Terrence – November 10, 2016

    I have been suing this thing for a few years now and the product’s technology is still compatible with some of the newer modems and routers on the market.

  31. Rated 5 out of 5

    Customer – December 4, 2016

    Very reliable and have been problem free since day one.

  32. Rated 5 out of 5

    BJ LOPRESTI – December 13, 2016

    THIS IS A GREAT UINIT

  33. Rated 4 out of 5

    Customer – January 4, 2017

    great product

  34. Rated 5 out of 5

    Andrew Kettring – January 5, 2017

    Very reliable. No more frustrations with our internet inexplicably cutting out while streaming. Buy a modem and start saving money.

  35. Rated 5 out of 5

    Customer – January 5, 2017

    Fast

  36. Rated 5 out of 5

    jc1179 – January 6, 2017

    Works great if you have cable for a very long time they will pay for themselves.

  37. Rated 5 out of 5

    Ed – January 7, 2017

    I bought this thing in September of 2010 (6+ yrs) . It’s still going strong and works just as well as the newest tech. I was looking into getting a new just because of its age but did a little research and decided there really was no need to replace it.

  38. Rated 5 out of 5

    Bruce – January 14, 2017

    Done

  39. Rated 3 out of 5

    Joseph Casioppo – January 17, 2017

    Worked well for a few years, then it quit. I expected longer life from it.

  40. Rated 4 out of 5

    TheOne – January 19, 2017

    Unfortunately I could not use this cable modem do to none compatibility with my local cable company! I had to return it. Return was easy and very friendly. I am happy about that! Thank You!

  41. Rated 3 out of 5

    Will St Germaine – January 19, 2017

    Comcast will not support this modem anymore. They have added it to the end of life list and force you to upgrade. I wish I could upgrade my internet service…We don’t have much for options in my neighborhood.

  42. Rated 5 out of 5

    Paul Andrew Anderson – February 10, 2017

    Thought this deserved a review after so long, though a newer version is out and seems good too. I’ve been on the 25mbps plan few a few years now, and this workhorse keeps streams buffer-free. You can catch the Xfinity Approved Cable Modems List 2017 at the Approved Modems website (DOCSIS 3.0 currently), and read this review to see how to get all the services you’d need on the 25mbps Xfinity plan: https://smile.amazon.com/review/R1DWANZGRZT3ZB

  43. Rated 3 out of 5

    DrewMcG (Ann Arbor, MI USA) – February 18, 2017

    I’ve owned the same modem–in its Arris SB6121 formulation (they made this one under license with Motorola as well)–for years. These are both 4×4 (download/upload Docis 3.0 channels). They are all one needs for 100mbs+ download service. (I’m skeptical of claims of 150mbs, but 120mbs+ should be easily and consistently achievable, with the corresponding cable internet service package.But nobody should be buying this item new anymore. First, Comcast (and soon perhaps others) are sketchy about “provisioning” it (aka, setting up to work) on their networks. They’ve “grandfathered” those of us who have them–but some of their customer service reps are confused about this. I was having a problem with my Comcast internet service delivering pathetic speeds (10 times lower than my plan), and was fortunate enough to “chat” with a competent tech who managed to get my SB6121 set up to operate consistently and reliably at 90mbs/down/12mbs up (which is faster than my plan!). But even he suggested I start looking around for another modem “in a few months” since this one may not be replaceable on their system.Besides, you can get a much better, twice as fast, 8×4 Zoom model 5340 for half the price of this one! Zoom 8×4 Cable Modem, 343 Mbps DOCSIS 3.0, Model 5345. It has a 4.5 user rating. BTW, Zoom now has the Motorola license and builds their modems . . . If you’re really trying to stretch a buck, buy a USED one of these (or the SB6121, which are available all over the place, including here, for like $20). That way, if you cannot get your ISP to provision it, you’re not out too much dough.

  44. Rated 4 out of 5

    S. Muratov – March 11, 2017

    Was working well.

  45. Rated 5 out of 5

    Tami Brown – March 21, 2017

    The best modem that I had bought. Bought it 5 years back and it is still working solid.

  46. Rated 5 out of 5

    Gamer – March 24, 2017

    When it was deployed (years ago), a tech at the ISP told me I needed to purchase a higher speed connection because of the 50mbps throughput. I didn’t and it’s still working great.

  47. Rated 3 out of 5

    Kojak – April 1, 2017

    Lasted only til late 2016

  48. Rated 5 out of 5

    brenda k. – April 25, 2017

    The best surf board you can buy for Comcast

  49. Rated 5 out of 5

    Yani L Brankov – May 17, 2017

    With Comcast it pays off in 3 months.

  50. Rated 5 out of 5

    David James – May 27, 2017

    I no longer own this, but it was a great modem. Fast and reliable

  51. Rated 4 out of 5

    DM – June 1, 2017

    I’ve owned this modem for 6 years now and it’s worked great! While Xfinity/Comcast still isn’t providing me with speeds as fast as the modem can handle, they keep increasing my service speed and the modem takes it. I’m up to 70Mbps.However, I’m not sure who to believe on this one… Every couple of years Xfinity/Comcast pops up and tells me that they’ve been “forgetting” to charge me the modem rental fee for the equipment that I own, and I have to spend an hour or two on the phone to try to ensure that they aren’t going to bill me for my own equipment. Tonight was another such ordeal, but at the end of this call the technician told me that the reason their system kept trying to bill me is that the this modem somehow identifies itself as a rental. Maybe mine came from the same batch of hardware that Comcast purchased years ago. *shrug* However it’s happening, that’s what Comcast is claiming now. Their suggestion: buy a new modem. Since I’m happy with my SB6120 and unhappy with Comcast’s inability to correct this issue on their end (even after providing them with all the documentation necessary on multiple occasions) I think I’ll be switching ISPs soon.Great piece of equipment, but if you have Xfinity/Comcast as a service provider their is the possibility of this kind of snag occurring. I highly recommend the modem, I don’t recommend using with Xfinity/Comcast.

  52. Rated 5 out of 5

    BB123 – June 12, 2017

    I saved a ton of money buying this modem. I get very fast internet now. no complaints at all. It does what it is supposed to do. I have had it for over a year now and it has more than paid for itself vs renting it from TWC/Spectrum

  53. Rated 5 out of 5

    Isaac – June 28, 2017

    Very fast and useful, a lot better then PoS 3 in 1 modem

  54. Rated 5 out of 5

    B-A-R – July 10, 2017

    This modem consistently gets me over 240MPS on Comcast. Sick!

  55. Rated 5 out of 5

    Max – July 15, 2017

    Purchased this guy end of 2010 and it still working great! I recently downgraded my service from 100Mbps to 50Mbps with Comcast and the Comcast rep told me these modems have been known to cause fires and I had to get a new one because he said the modem wouldn’t work with Comcast Internet anymore. I rejected his claims and downgraded my service and what do you know still works like a charm! Don’t believe the snakes at Comcast. This modem works great!

  56. Rated 5 out of 5

    StratMan – September 3, 2017

    Has worked without problems for several years with our Comcast cable.

  57. Rated 4 out of 5

    J P Hart – September 27, 2017

    This was great and has served me very well for a few years, however I recently found out that Comcast no longer supports this device and I can only get 20Mb/s download speeds even though I am on their Blast tier of 200MB/s download speed.

  58. Rated 5 out of 5

    Art Love – September 28, 2017

    Was delivered on time and after calling the ISP was up and running in a matter of a few minutes. No issues

  59. Rated 5 out of 5

    mcdull – October 4, 2017

    Purchased in 2011 and be using it for 6 years until I switched service.Don’t get into the sale trap that you need a new and faster cable modem.Netflix 4K video is only 15Mbps (way less than standard Blu-ray) and much less bitrate required for youtube and other video content. Unless you need to constantly download GBs of files over Internet or watching over 8 4K videos at the same time, you don’t need any faster cable modem or faster service which is just marketing strategy

  60. Rated 5 out of 5

    D. Klobe – November 15, 2017

    Bought this unit from Frys Electronics back in 2009! Never had any problems with Cox Internet. Still going strong and supports all of our high demand internet needs. Impressive since I have done nothing to it in 8 years!Feb 2018 Update: Went to Fry’s Electronics and talked to one of the employees about a new modem. The more he talked the more I convinced myself that I do not need a new one.This modem is still running strong after 9 years! I figure that I do not need to even think about replacing it unless I need more than 150 bps download, or Cox doesn’t allow it anymore, or Cox installs fiber cable. Works excellent for my family!

  61. Rated 5 out of 5

    Victor Estrada – November 28, 2017

    Has been working non stop at a 150mbps connection for years now, highly recommended.

  62. Rated 3 out of 5

    B. Sarsfield – February 6, 2018

    I had this modem for 5-6 years. This WAS the best on the market. Never failed. Rock solid. The 3.0 DOCSIS technology has been replaced with 3.1 on many networks.Time to move on! NETGEAR DOCSIS 3.1 Ultra-High Speed Gigabit Cable Modem. Max download speeds of 1.0 Gbps – Certified for XFINITY by Comcast and Cox (CM1000-1AZNAS) is the next king of the cable modem hill. What does DOCSIS 3.0 vs DOCSIS 3.1 mean? Real world; upto 2x faster (2x throughput and 2x decrease in latency).

  63. Rated 5 out of 5

    Lori Judkins – February 7, 2018

    Fine

  64. Rated 5 out of 5

    A. Fonseca – February 14, 2018

    No issues

  65. Rated 5 out of 5

    Robert B English – February 17, 2018

    Mine works great. And it fun not to give rent money to Comcast. I have had no problems.

  66. Rated 5 out of 5

    tmoz – April 7, 2018

    I have used this with Comcast for a long time. Never had any issues with it. Now that I am going past 100Mbps, I need to upgrade. Sad to see it go!

  67. Rated 5 out of 5

    V. M. – May 28, 2018

    Motorola SB6120 SURFboard DOCSIS 3.0 eXtreme Broadband Cable ModemHas worked flawlessly for years.

  68. Rated 5 out of 5

    Trung Vu – July 4, 2018

    Good price.

  69. Rated 4 out of 5

    Joel Hammer – July 9, 2018

    I just got it. Hooked it up and called comcast and it is working with no hassle.Comcast was very efficient. Whole thing took about 20 minutes from opening the package to being online.The only nuisance was I use linux. I rebooted into windows and tried to run the setup wizard but that did nothing and does nothing.Linux wasn’t the problem. It was booting into windows for no reason which was the nuisance. You don’t need windows to run this thing.All you need to do is read the userguide which is easy to find on the CD.ONE WARNING: The comcast guy told me the biggest problem they have is that the MAC on “mail order” modems are sometimes not unique and/or are in use by somebody else in their system.I dunno if that is true. Just passing it along.

  70. Rated 5 out of 5

    Customer – July 26, 2018

    works great

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About Arris
Arris is a well-known manufacturer of internet modems and routers with over three decades of experience. The company was established in 1986 with an emphasis on offering new connectivity solutions for the telecommunications industry. Today, Arris is a prominent producer of broadband modems, routers, and gateways, with a reputation for producing dependable, user-friendly, and feature-rich devices of superior quality. Compatibility with a variety of internet service providers is a distinguishing characteristic of Arris's devices. The company's modems and routers are compatible with a range of technologies, including DSL, cable, and fiber, making them an excellent option for consumers seeking a flexible and dependable connectivity solution. Arris's devices are noted for their great performance in addition to their interoperability. The company's modems and routers are built to enable fast internet speeds and can handle massive volumes of data traffic, making them an excellent option for households with several internet-connected devices. Numerous Arris products include advanced technology such as Orthogonal Frequency Division Multiplexing (OFDM) and improved Quality of Service (QoS) for optimizing network performance and guaranteeing a seamless, dependable internet experience. Arris's devices are renowned for their usability in addition to their performance and interoperability. The company's modems and routers have user-friendly interfaces and straightforward setup procedures. Parental Controls and guest WiFi are included in a number of Arris's devices, making them an excellent choice for families and small companies. Arris is a reputable brand that offers a vast selection of high-quality, dependable, and feature-rich internet modems and routers. The company's solutions are compatible with a broad variety of internet service providers and are designed to accommodate high internet speeds and big volumes of data traffic. In addition, Arris's products are user-friendly and have helpful features like parental controls and guest WiFi.
Shipping & Delivery
When will my order ship?

We ship all orders within 1-2 business days from one of our US-based warehouses unless items in your order are on backorder. Backordered items are shipped as soon as they become available. If you've ordered an item that is backordered, we will email you to let you know as soon as possible.

Do you offer upgraded shipping options?

Check our shipping & delivery page for the most up-to-date information about shipping options. In most cases we offer standard shipping and an expedited shipping option.

What shipping carriers do you use?

We currently ship the majority of orders via USPS Priority Mail or Amazon Logistics. Larger orders are shipped with FedEx, UPS or LTL Freight. Please contact us if you have any questions regarding shipping to your location.

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Actiontec PK5001A ADSL2/2+ Wireless N Modem Router for CenturyLink

Rated 4.64 out of 5
$82.99
  • Compatible with CenturyLink Service & Other DSL Providers
  • Supports Internet Download Speeds up to 20 Mbps
  • ADSL2/2 Wireless Modem Router with Built-in Firewall & WPA Encryption
  • 4 Ethernet Ports + 1 Phone Port + 1 DSL Port
  • Supports Reliable, Energy Efficient Internet Access
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Actiontec GT701D Ethernet DSL Modem
Actiontec GT701D Ethernet DSL Modem
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Actiontec GT701D Ethernet DSL Modem

Rated 4.45 out of 5
$57.99
  • Compatible with CenturyLink, Verizon, AT&T & Frontier
  • Supports Internet Download Speeds up to 24 Mbps
  • DSL Modem with Routing Capabilities - No Need for Extra Equipment
  • Energy-Efficient & Environmentally Friendly with a Small Footprint
  • Quick & Easy to Install with 1 Ethernet Port + 1 DSL Port
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