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Motorola SURFboard SB6141 DOCSIS 3.0 High-Speed Cable Modem (OEM Brown Box)

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List Price: $149.99
Price: $89.99 & FREE Shipping. Details
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  • Compatible with Windows®, Macintosh®, and UNIX® computers
  • Channel bonding of up to eight downstream channels and four upstream channels increasing data rates of over 300 Mbps for received data and over 100 Mbps when sending data
  • The SB6141 includes an internal filter to eliminate potential interference from MoCA signals' intermodulation beats
  • Supports IPv4 and IPv6 to expand network addressing capabilities
  • Enhanced security: supports AES traffic encryption
9 new from $81.99 10 used from $65.00 2 refurbished from $58.95

Frequently Bought Together

Motorola SURFboard SB6141 DOCSIS 3.0 High-Speed Cable Modem (OEM Brown Box) + ASUS RT-N66U Dual-Band Wireless-N900 Gigabit Router
Price for both: $214.98

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Product Details

  • Product Dimensions: 5.2 x 1.6 x 5.2 inches ; 1 pounds
  • Shipping Weight: 7 pounds (View shipping rates and policies)
  • ASIN: B007IMPMW4
  • Item model number: SB6141
  • Average Customer Review: 4.4 out of 5 stars  See all reviews (1,440 customer reviews)
  • Amazon Best Sellers Rank: #332 in Electronics (See Top 100 in Electronics)

Product Description

Motorola's easy-to-use SB6141 SURFboard DOCSIS 3.0 Cable Modem unlocks the potential of offering innovative high-bandwidth data and multimedia services to customers. Utilizing the power of DOCSIS 3.0, the SB6141 enables channel bonding of up to eight downstream channels and four upstream channels, which allows an operator to offer its customers advanced multimedia services with data rates of over 300 Mbps for received data and over 100 Mbps when sending data.


Customer Questions & Answers

Customer Reviews

Easy to install and works great.
Daniel J Brede
My best speed test (using speedtest.net) was 5.94 Mbps download and 1.92 Mbps upload.
J. Clement
I've had this modem a month now and it works great.
B118C

Most Helpful Customer Reviews

694 of 716 people found the following review helpful By Jonah B. on July 2, 2012
I have Time Warner internet in the Raleigh/Durham area of NC. This is a DOCSIS 3.0 area.

My download speeds have been shockingly unreliable ever since I started my internet service about 6 months ago. It is supposed to be 20 mbit down. Sometimes, it is actually better than this (25+ for short times), but more often than not, it is much worse (at times < 5, usually around 10-12). It also fluctuates wildly on a minute-by-minute basis. One minute I'll have great speed, the next it crawls. Even during a single speed test, it would fluctuate between about 5-25 mbit.

TWC support was predictably unhelpful. The best I got from them was "that should not be happening." I pointed out that their own FAQ page says that a DOCSIS 3.0 modem is required for my service tier (so-called "turbo"). They said no, the old DOCSIS 2.0 Motorola SB5101 they gave me was fine. I got the same BS from the "normal" reps as well as the so-called "level 3".

I asked if they would give me a DOCSIS 3.0 modem, even though they claim it is not "required". They said no, I would have to upgrade to "extreme," which would add $10/month for the service and another $2.50/month for their DOCSIS 3.0 gateway.

So instead of doing that, I bought this modem (which is on the TWC approved device list). I called them, gave the MAC address, and I was up and running. When the modem connected, the downstream LED turned blue, which according to the manual, means that the channel is bonded. This is a very good thing.

With this modem, I get 20 mbit on the dot, 24 hours a day. Every speed test I have run confirms (including the 200 MB test on testmy.net). Last night, I downloaded about 15 GB of data with a sustained 20 mbit rate the entire time.
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3,224 of 3,557 people found the following review helpful By Amazon Customer TOP 1000 REVIEWER on March 1, 2013
Verified Purchase
*** PLEASE CLICK "YES" THIS REVIEW WAS HELPFUL SO IT STAYS VISIBLE AND NO ONE ELSE IS BURNED ***

This is an update to my initial review. There *is* a problem with the BLACK SB6141 modems, but it's not what I originally thought.

The BLACK modems are older than the WHITE modems, and ship with an older firmware version that had a serious bug (v1.0.6.3). If you are a TWC customer, BEWARE. As of February 2013, it was TWC policy to NEVER update the firmware of customer-owned modems. I don't know the policy today or the policy in other areas, but if your ISP will not update the firmware of any customer-owned modems (or won't update the SB6141, specifically), do not buy this modem!

** Confirm with your ISP that they will update the firmware before buying this modem. ***

My initial review repeated what a Motorola tech support person told me - that my modem was defective (constantly "flapping" - dropping the connection) because it was fraudulently sold to me as new when it had to be used - had to be used because it was black, and not the version intended for consumers. The black modems are non-retail - sold by Motorola only to ISPs. The white modems are the ones meant to be sold directly to consumers. He knew there were a lot of problems with the black modems because he was fielding so many phone calls, but he guessed wrong about the reason for the problems. Apparently, the BLACK modems ARE being sold new to consumers by unauthorized sellers (and thus are not under warranty!). However, they have older defective firmware on them, and the only party that can legally update the firmware per DOCSIS 3 is the ISP. Some ISPs - notably, TWC - refuse to do this as a matter of policy. Others, like Mediacom, don't support this specific modem.
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188 of 207 people found the following review helpful By J. Clement on September 16, 2012
Verified Purchase
As many of you, I am a Time Warner customer. I was disappointed with my bandwidth speed. I was paying for "Turbo" at an extra five dollars per month but was't seeing an improvement (I tried on heavy and light usage days / periods). So I purchased this cable modem, after reviewing the compatible modems, on Time Warner's site. Be sure to check the list of modems allowed by your provider FIRST.

I opted for the SB6141 DOCSIS because it is has the IPV6 addressing system, is backward compatible and its channel bonding technology to boost my bandwidth speed. The IPV4 addressing is used up (predicted to be end of this year) the internet community will be going to the new IPV6 addressing system.
Granted bandwidth is limited to the CAP set by your provider but your equipment plays a part. Before I bought this modem I was using one from Time Warner. My best speed test (using speedtest.net) was 5.94 Mbps download and 1.92 Mbps upload. As of this morning, my latest test, shows 34.35 Mbps download and 1.92 Mbps upload. The upload limit is obviously kept by Time Warner to discourage uploading of large files (music libraries ,etc.).

It is built on the DOCSIS 3.0 standard (Data Over Cable Service Interface Specification). This is the latest version of DOCSIS. It also means that it uses channel bonding technology to gain access to the unused bandwidth capacity available on your network, in effect, boosting your bandwidth speeds.

The modem has 8 download and 4 upload channels. This means that the provider can (doesn't but could) offer data rates over 300 Mbps download and over 100 Mbps upload (at least not to home users). Each channel is capable of 40 Mbps, theoretically, for a maximum of 320 Mbps. But your provider "caps" the maximum at a much lower number.
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