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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

  • Gigabit Ethernet connectivity
  • DOCSIS 3.0-certified (EuroDOCSIS 3.0-based)
  • Channel bonding of up to 4 downstream and 4 upstream channels
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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
2 Year Limited Warranty
Labor
2 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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  • brian s.
  • 4/16/2014 11:00:26 AM
  • Tech Level: Low
  • Ownership: 1 month to 1 year

4 out of 5 eggscan this handle twc 100 mps

Pros: fast

Cons: cant handle twc 100mps

Other Thoughts: I currently have the motorola sb6121 and from what I heard from twc it could not support 100 mps b/c of 4 channels

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

  • Chad G.
  • 4/15/2014 9:06:20 PM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGreat Modem

Pros: Plug n play with Cox Communications. Super fast and stable. Hooked the cable up and turned the power on, nothing else needed. Haven't had to reboot since I got it over 3 months ago.

Cons: Leds are bright if you face it towards you.

Other Thoughts: Great product and a must have over trying to rent or buy from the cable company.

Did you find this review helpful? Yes No

  • Matthew C.
  • 4/13/2014 9:34:49 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsDon't forget a router/wifi

Pros: Fast, compact. I had issues, but motorola was actually very helpful. SO DONT ignore that little piece of paper that comes with the modem that tells you to call.

Cons: Does what it is supposed to. no routing, no wifi. I went to the admin for the modem, and realized there is nothing to change.

Other Thoughts: this is not like other cable modems that have the built in wifi/router etc etc. I have to admit, for considering myself so tech savvy, this modem threw me for a loop. did not realize the rj45 out is only to 1 device.. aka, don't hook a switch to it thinking your 3 rj45 devices will still work. if you thought you were going to do this, save yourself time and buy a router (wireless preferred).

Did you find this review helpful? Yes No

  • Michael M.
  • 4/7/2014 2:20:08 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsWorks great

Pros: Works perfectly and one of the best buys you can make if you're renting hardware from your ISP this thing has already paid for itself many times over now that I got the $10/m equipment charge dropped from my bill

Cons: None

Other Thoughts: Some people say the black models are refurb ones or some nonsense and that white ones are retail I don't necessarily believe them though either way this has worked great for a long time now

Did you find this review helpful? Yes No

  • David M.
  • 4/6/2014 5:53:37 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsworks

Pros: Works great, easy activation with Cox New Orleans. Seems to be more stable than my old motorolla, but time will tell

Cons: none

Did you find this review helpful? Yes No

  • David M.
  • 4/6/2014 10:39:48 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsTrouble free

Pros: Does exactly what it is supposed to do and is a perfect replacement for the original modem provided by Time Warner. Plug it in, turn it on, called the cable company to have them activate it and I'm surfing away. Although I'm technically savvy, even a monkey could have set this up.

Cons: None

Other Thoughts: Time Warner was "renting" me their cable modem for $6 a month. This product will pay for itself in less than a year.

Did you find this review helpful? Yes No

  • Daniel J.
  • 4/1/2014 12:58:26 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsGreat Buy

Pros: I got this, a great WiFi, and 3-P.C. Anti-Virus for 2 years rental fee.

Cons: none

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

  • Bruce B.
  • 3/30/2014 5:37:37 PM
  • Tech Level: Average
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsGreat with Comcast

Pros: Have now installed four of these. Three get heavy use with all kinds of data, all on Comcast. Periodically uploading GB of video and image data (not just using for downloading). Rock solid over a year: no issues. Fourth has been running couple of weeks with no issues.

Cons: None! Even the price is very fair.

Other Thoughts: Have also recommended this modem to others who report similar good experiences. If you require high reliability, this modem is highly recommended.

Did you find this review helpful? Yes No

  • Thomas H.
  • 3/27/2014 4:10:59 PM
  • Tech Level: Average
  • Ownership: less than 1 day
  • Verified Owner

5 out of 5 eggsLove This

Pros: fast set up increase speeds better clarity on voip

Cons: none so far

Did you find this review helpful? Yes No

  • Robin G.
  • 3/27/2014 11:10:01 AM
  • Tech Level: Somewhat Low
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggssave money

Pros: this will pay for itself in less than a year. got it bundled with a free wireless router / item N82E16833416001 to use with Comcast Xfinity service.

Cons: tech had to call customer service to add/inventory my equipment. took a while but was well worth it

Did you find this review helpful? Yes No

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Networking > 
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Motorola > 
Item#: N82E16825122015
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