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Motorola > 
Item#: N82E16825122015

MOTOROLA SB6121 SURFboard Cable Modem Up To 172 Mbps Down and 131 Mbps Up RJ-45, Gigabit Ethernet DOCSIS 3.0, 2.0 and 1.1, Euro-DOCSIS 3.0

  • Compatible with Time Warner, Comcast, Charter, Cablevision, and others
  • Gigabit Ethernet connectivity
  • DOCSIS 3.0-certified (EuroDOCSIS 3.0-based)
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SB6121

SB6121 SURFboard Cable Modem RJ-45

Building upon the success of the SB6120, Motorola's SURFboard SB6121 delivers your complete personal media experience, at lightning-fast broadband speed. It harnesses the power of DOCSIS 3.0 technology to bond up to four downstream channels and four upstream channels - providing you advanced multimedia services with data rates of more than 100Mbps in each direction. That makes gaming, shopping, downloading, working, high-quality voice and video conferencing, and peer-to-peer networking applications far more efficient than ever before.

 

Features

SB6121 Easy to Set Up and Use
  • Plug-and-play installation
  • Front panel LEDs indicate status and simplify troubleshooting
  • Multi-language user guides
  • Supports standard internet software
  • User-friendly online diagnostics

Efficient
  • Stylish and space-saving enclosure
  • Offers innovative, high-bandwidth data and multimedia services to customers
  • Backward-compatible to DOCSIS / EuroDOCSIS 1.x and 2.0

Advanced Services Ready
  • DOCSIS 3.0-certified (EuroDOCSIS 3.0-based)
  • Channel bonding of up to four downstream and four upstream channels
  • 1GHz capable tuners
  • Supports IPv4 and IPv6 to expand network addressing capabilities
     
Versatile and Convenient
  • Compatible with Windows, Macintosh, and UNIX computers.
  • Gigabit Ethernet (RJ-45) data port enable flexible, high-speed connectivity with Auto Negotiate and Auto MDIX

Reliable and Secure
  • Enhanced security: supports Advanced Encryption Services (AES) traffic encryption
  • Remotely configurable and monitorable using SNMP and TFTP
 
SB6121

As part of Motorola's DOCSIS 3.0 Ultra-Broadband family of products, the SB6121 includes an enhanced tuner that supports up to a 1GHz downstream input, which allows operators to increase the frequency spectrum for deployment of new high-value service - such as bandwidth on-demand, commercial services, interactive gaming, and IPTV. The SB6121 features a 10/100/1000 Base-T Ethernet (RJ-45) port, as well as intuitive, easy-to-read front-panel operational status LEDs.

What Is DOCSIS 3.0?

With the DOCSIS 3.0 specification, cable Internet providers can take advantage of the extra capacity provided by channel-bonding technology in order to offer ultra-fast broadband services. Channel bonding allows parallel data pipes to act as a single broadband conduit. With each channel capable of providing around 40Mbps of data, the Motorola SURFboard SB6121's four downstream channels can provide a theoretical maximum of 160Mbps of throughput.

Currently, cable providers max out at around 50Mbps of downstream data throughput, but DOCSIS 3.0 will enable cable Internet providers to continue to improve the speed of their networks.

System Requirements
The SB6121 is compatible with the following operating systems:
  • Windows 7
  • Windows Vista, Service Pack 1 or later
  • Windows XP, Service Pack 2 or later
  • Mac 10.4 or later (Ethernet connection only)
  • UNIX (Ethernet connection only)
  • Linux (Ethernet connection only)

What's in the Box

Motorola SURFboard SB6121, Ethernet cable, Installation sheet
 
 

 


Learn more about the Motorola SB6121

Model

Brand
MOTOROLA
Model
SB6121

Spec

Type
Cable Modem
Interface
1 x RJ-45, Gigabit Ethernet
Cable Interface
75ohm F-connector
Standards
DOCSIS 3.0, 2.0 and 1.1, Euro-DOCSIS 3.0
Max Transmission Rate
Up To 172 Mbps Down and 131 Mbps Up

Features

Features
Data Protocol: TCP/IP

Power: 9W (nominal)

Input Power: 105 to 125 VAC, 60 Hz

Downstream:
-Modulation: 64 or 256 QAM

-Capture Bandwidth: 100 MHz (edge to edge)

-Maximum Theoretical Data Rate:
DOCSIS: 171.537 Mbps (4 channels) / 42.884 (single channel)@ 256 QAM at 5.36 Msym/s
EuroDOCSIS: 222.464 Mbps (4 channels) / 55.616 (single channel)@ 256 QAM at 6.952 Msym/s.

-Bandwidth:
DOCSIS: = 24 MHz
EuroDOCSIS: = 32 MHz.

-Symbol Rate:
DOCSIS: 64 QAM 5.057 Msym/s; 256 QAM 5.361 Msym/s

EuroDOCSIS: 64 QAM 6.952 Msym/s; 256 QAM 6.952 Msym/s.

-Operating Level Range: –15 to 15 dBmV

-Security: DOCSIS 3.0 Security (BPI+, EAE, SSD)

-Network Management: SNMP v2 & v3

-Provisioning Supports: IP addressing using IPv4 and/or IPv6 (dual stack).

Upstream:
-Modulation: QPSK and 8, 16, 32, 64, 128 QAM

-Maximum Channel Rate
DOCSIS 131.072 Mbps (4 channels) / 32.768 Mbps (single channel): @ 128 QAM at 6.4 MHz
EuroDOCSIS 131.072 Mbps (4 channels) / 32.768 Mbps (single channel): @ 128 QAM at 6.4 MHz.

-Channel Width 200 kHz, 400 kHz, 800 kHz, 1.6 MHz, 3.2 MHz, 6.4 MHz

-Symbol Rates: 160, 320, 640, 1280, 2560, 5120 ksym/s

-Frequency Range: DOCSIS 5-42 MHz (edge to edge), EuroDOCSIS and optional DOCSIS 5 to 65 MHz (edge to edge)

-Compatibility:
Compatibility PC: 90496, Pentium, or later; Windows Vista, 2000, XP or 7 or Linux with Ethernet connection (older versions of Windows, although not specifically supported, will work with this cable modem).
Macintosh: Power PC or later; OS 9 or higher, Ethernet connection.
UNIX: Ethernet connection.
Home Networking: Ethernet router or wireless access point.

Packaging

Package Contents
Ethernet Cable
Power Supply
Software License & Regulatory Card
Product Guide (Install Sheet)

Manufacturer Warranty

Parts
1 Year Limited Warranty
Labor
1 Year Limited Warranty

Quick Info

Warranty

  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year


Customer Reviews of the Motorola SB6121

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  • Charles S.
  • 4/2/2015 11:40:26 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggs

Pros: Easy peasy lemon squeezy. Switched to Comcast and wanted to save some money each month. Looking at this as an investment - in 7 months I'll have this router paid for and after that I'm saving $$$. Make sure you have a router that won't bottleneck your internet speed because your modem won't be the bottleneck any more!

Cons: No cons on my end. Couldn't have been easier to set up.

1 out of 1 people found this review helpful. Did you? Yes No

  • Lyle S.
  • 3/30/2015 3:06:51 AM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsWhy rent a shoddy modem?

Pros: I decided to upgrade my internet speeds to the top tier Comcast offers me but I was infoirmed that my current modem I was renting from them wasn't powerful enough and also told the only way to get the speeds I need was to buy my own. This is fine by me as it's less money I have to give to Comcast. Modem took less than 10 mins to get up and running. Any and all problems came on Comcast's end.

Cons: Comcast. (Obviously not the fault of Motorola)

Other Thoughts: Worth the money to ease Comcast's grip on me.

Did you find this review helpful? Yes No

  • Jonathan G.
  • 3/29/2015 12:50:14 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsMotorola SB 6121

Pros: Easy set up. Faster speeds.

Cons: It took a few days to see my speeds ramp up to the max speeds of my ISP but this could be related to changing from the DOCSIS 2.0 to 3.0.

Other Thoughts: I love Motorola modems. I have my motorola surfboard 5100 for about 8 years and it has been rock solid.

Did you find this review helpful? Yes No

  • Stephen S.
  • 3/19/2015 6:36:55 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsEggcellent

Pros: -Run Cool
-Very bright LED's make a good night light in the server room
-Reliable at least more than the cable company itself
-low latency from end to end
-exceeds the speeds I paid for (also dependent on cable company)

Cons: It doesn't make me breakfast, other than that none really =)

Did you find this review helpful? Yes No

  • Joel H.
  • 2/23/2015 4:39:00 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsSolid for 8 months

Pros: - Fast, handling Comcast burst from 50-100 Mb/s

Cons: - I have Comcast
- No other internet competitors in my neighborhood

Other Thoughts: Seriously, a half hour phone call to comcast and after X months this pays for itself. I've had to 'reset it' maybe twice in the last year (no more than usual). Very pleased with the purchase.

1 out of 1 people found this review helpful. Did you? Yes No

  • Ryan F.
  • 2/16/2015 4:28:28 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsReliable

Pros: I got this for free in a promotion, so that's great, but it also turned out to be a great modem.

Cons: None so far!

Did you find this review helpful? Yes No

  • Michael J.
  • 2/9/2015 12:53:38 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week

1 out of 5 eggsOld version

Pros: None. Buy a later version.

Cons: The SB6121 is an outdated version. Research the SB6141 or SB6183. Some cable companies require the later versions. There may be bug fixes that are important to you in the later versions.

2 out of 4 people found this review helpful. Did you? Yes No

  • Spencer G.
  • 2/8/2015 8:01:01 AM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGreat Updated Modem

Pros: Updated technology works with Comcast requirements. Easy setup. No issues.

Cons: None so far

Other Thoughts: I was having issues with Netflix and slow download speeds. Turns out it was my outdated modem. It was listed as "end of life" on their website. I bought this modem and it cleared up my problems. No more waiting for Netflix to load in the middle of watching something.

Did you find this review helpful? Yes No

  • Thomas Z.
  • 1/28/2015 6:45:12 PM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsBest in Class

Pros: Best performing cable modem so far. No down time . No bugs. Reboots itself after power outage.

Cons: Non so far.

Other Thoughts: Lights are a little distracting and instructions not clear.

1 out of 1 people found this review helpful. Did you? Yes No

  • Lester P.
  • 1/26/2015 7:40:40 PM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsMotorola modem

Pros: So far so good, the unit is working like a champ. It's handling everything I throw at it thru a linksys router, iPhone, laptop, tablet & decktop all at the same time.

Cons: None at the moment. It's doing all I want it to do.

Other Thoughts: If you don't have a really heavy demand on your system there's no doubt that this unit will work great for everyday use.

0 out of 1 people found this review helpful. Did you? Yes No

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Item#: N82E16825122015
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