20 Best Motorola Modem Sb6121 [2024]

Are you looking for the best motorola modem sb6121? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling motorola modem sb6121.

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# Preview Product
1 ARRIS SURFboard SB6121 4x4 DOCSIS 3.0 Cable Modem -Retail Packaging-Black ARRIS SURFboard SB6121 4x4 DOCSIS 3.0 Cable Modem -Retail Packaging-Black
2 motorola Surfboard SB6121 Cable Modem (Renewed) motorola Surfboard SB6121 Cable Modem (Renewed)
3 12V AC Adapter Power Supply for Motorola Surfboard SB6141 SB6121 SB6120 SBG6580 SBG6580-2... 12V AC Adapter Power Supply for Motorola Surfboard SB6141 SB6121 SB6120 SBG6580 SBG6580-2...
4 motorola Surfboard SB6121 Cable Modem motorola Surfboard SB6121 Cable Modem
5 T-Power 12v AC DC Adapter Compatible with Comcast Xfinity Motorola Surfboard SBG6700AC SBG6580... T-Power 12v AC DC Adapter Compatible with Comcast Xfinity Motorola Surfboard SBG6700AC SBG6580...
6 Generic Compatible Replacement AC Adapter Charger for Motorola Surfboard SB6121 SB6141 SB6180 Cable... Generic Compatible Replacement AC Adapter Charger for Motorola Surfboard SB6121 SB6141 SB6180...
7 AC Adapter for Motorola Surfboard SB6121 SB6141 SB6180 Cable Modem Power Supply AC Adapter for Motorola Surfboard SB6121 SB6141 SB6180 Cable Modem Power Supply
8 AC Adapter for Motorola Surfboard Sb6141 Sb6121 Sbg6580 Cable Modem Power Supply AC Adapter for Motorola Surfboard Sb6141 Sb6121 Sbg6580 Cable Modem Power Supply
9 Ac Adapter for Motorola Surfboard SB6120 SB6121 SB6141 SB6180 SBG6580 SBG901 900 Cable Modem dta-100... Ac Adapter for Motorola Surfboard SB6120 SB6121 SB6141 SB6180 SBG6580 SBG901 900 Cable Modem...
10 AC DC Adapter Power Cord Charger Compatible with Motorola Surfboard SB6120 SB6121 SB6141 Cable Modem AC DC Adapter Power Cord Charger Compatible with Motorola Surfboard SB6120 SB6121 SB6141 Cable Modem
11 ARRIS SURFboard SB6121 4x4 DOCSIS 3.0 Cable Modem (Renewed)-Black ARRIS SURFboard SB6121 4x4 DOCSIS 3.0 Cable Modem (Renewed)-Black
12 Motorola MB7621 Cable Modem | Pairs with Any WiFi Router | Approved by Comcast Xfinity, Cox, and... Motorola MB7621 Cable Modem | Pairs with Any WiFi Router | Approved by Comcast Xfinity, Cox, and...
13 Motorola Surfboard SB6141 DOCSIS 3.0 High-Speed Cable Modem- Black (OEM Brown Box) Motorola Surfboard SB6141 DOCSIS 3.0 High-Speed Cable Modem- Black (OEM Brown Box)
14 Replacement 12V Modem Power Cord AC DC Adapter Charger for Comcast Xfinity Motorola Surfboard... Replacement 12V Modem Power Cord AC DC Adapter Charger for Comcast Xfinity Motorola Surfboard...
15 T-Power 12V (6.6ft) Ac Adapter Compatible with NETGEAR & Motorola Arris Surfboard DOCSIS Cable Modem... T-Power 12V (6.6ft) Ac Adapter Compatible with NETGEAR & Motorola Arris Surfboard DOCSIS Cable...
16 Motorola SBG6580 Surfboard Extreme 3.0 Wireless Cable Modem Gateway - Latest Version (Renewed) Motorola SBG6580 Surfboard Extreme 3.0 Wireless Cable Modem Gateway - Latest Version (Renewed)
17 Motorola MG7700 Modem WiFi Router Combo with Power Boost | Approved by Comcast Xfinity, Cox and... Motorola MG7700 Modem WiFi Router Combo with Power Boost | Approved by Comcast Xfinity, Cox and...
18 Motorola MT7711 24X8 Cable Modem/Router with Two Phone Ports, DOCSIS 3.0 Modem, and AC1900 Dual Band... Motorola MT7711 24X8 Cable Modem/Router with Two Phone Ports, DOCSIS 3.0 Modem, and AC1900 Dual...
19 ARRIS SURFboard SB8200 DOCSIS 3.1 Cable Modem | Approved for Comcast Xfinity, Cox, Charter Spectrum,... ARRIS SURFboard SB8200 DOCSIS 3.1 Cable Modem | Approved for Comcast Xfinity, Cox, Charter...
20 ARRIS Surfboard S33 DOCSIS 3.1 Multi-Gigabit Cable Modem | Approved for Comcast Xfinity, Cox,... ARRIS Surfboard S33 DOCSIS 3.1 Multi-Gigabit Cable Modem | Approved for Comcast Xfinity, Cox,...
Bestseller No. 1
ARRIS SURFboard SB6121 4x4 DOCSIS 3.0 Cable Modem -Retail Packaging-Black
  • Compatible with Time Warner Cable, Charter, Cox, Cablevision, and more
  • Not compatible with Verizon FiOS or AT&T U-verse, no longer approved by Comcast Xfinity
  • Requires Cable Iternet Service, if not sure your provider is CABLE call them to confirm
  • BROWN BOX models NOT VALID for this item when sold as New, should report to Amazon immediately and RETURN to Seller
  • Wired modem only, does NOT include WIFI Router or VOIP Telephone adapter. Gigabit Ethernet port to connect to computer or Router for fast downloads.
Bestseller No. 2
motorola Surfboard SB6121 Cable Modem (Renewed)
  • This refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning,...
Bestseller No. 3
12V AC Adapter Power Supply for Motorola Surfboard SB6141 SB6121 SB6120 SBG6580 SBG6580-2...
  • HZPOWEN products are CE / FCC / RoHS certified, tested by the manufacturer to match and / or exceed the OEM specifications.
  • Compatible with Comcast Xfinity Motorola Surfboard ARRIS SURFboard SBG6700AC SBG6700-AC SBG6580 SBG6580-G228 (570763-006-00)
  • Compatible with Belkin Wireless Router N150 N300 N450 N600 N750; Netgear N150 N600 N300; Compatible with MOTOROLA 579765-003 2247-N8 ADSL 2/2+...
  • Compatible with Motorola SB6120 Cable Modem SURFboard eXtreme SBG6580 SURFboard Wireless Cable Modem Gateway Ethernet SBG901 556315-005-00 SURFboard...
  • WARRANTY: 30 Days Refund - 24 Months Exchange
SaleBestseller No. 4
motorola Surfboard SB6121 Cable Modem
  • This refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning,...
SaleBestseller No. 5
T-Power 12v AC DC Adapter Compatible with Comcast Xfinity Motorola Surfboard SBG6700AC SBG6580...
  • T-Power - manufactured with Brand-new Input Voltage Range: AC 100V - 240V (12V )
  • Compatible Models: Motorola ARRIS SURFboard SB6190 SB6183 Sb5100 ,Comcast Xfinity Motorola Surfboard ARRIS SURFboard SBG6700AC SBG6700-AC SBG6580...
  • Belkin Wireless Router N150 N300 N450 N600 N750; Netgear N150 N600 N300; ,, MOTOROLA 579765-003 2247-N8 ADSL 2,2+ Wireless-N Modem Gateway - Black ,,...
  • Motorola SB6120 Cable Modem SURFboard eXtreme SBG6580 SURFboard Wireless Cable Modem Gateway Ethernet SBG901 556315-005-00 SURFboard Gateway DOCSIS...
Bestseller No. 6
Generic Compatible Replacement AC Adapter Charger for Motorola Surfboard SB6121 SB6141 SB6180 Cable...
  • High Quality Replacement Charger Part
  • Over Voltage and Current Protection
  • AC 110V-220V Wide International Travel Voltages Input
Bestseller No. 7
AC Adapter for Motorola Surfboard SB6121 SB6141 SB6180 Cable Modem Power Supply
  • Brand New, High Quality Replacement AC Wall Power Charger Adapter
  • Input: AC 100-240V 50/60Hz Auto (Worldwide AC Input)
  • Over Voltage Protection, Over Heat Protection
  • 90 days money back guarantee. 1 year product WARRANTY. Shipping from USA!
  • Please contact us with any questions regard this product - we are here to help!
Bestseller No. 8
AC Adapter for Motorola Surfboard Sb6141 Sb6121 Sbg6580 Cable Modem Power Supply
  • Compatibility: This Power adapter will work with Motorola SURFboard Sb6141 Sb6121 Sbg6580 Cable Modem Power Supply
  • Input Voltage: 100~240VAC 50/60Hz, Worldwide Use Output: DC
  • Brand New AC to DC Power Adapter
  • Safe standard: FCC,CE, RoSH
  • Short-circuit Protection, Over Voltage Protection, Over Heat Protection
Bestseller No. 9
Bestseller No. 10
AC DC Adapter Power Cord Charger Compatible with Motorola Surfboard SB6120 SB6121 SB6141 Cable Modem
  • AC DC ADAPTER Power Cord Charger Compatible with Motorola Surfboard SB6120 SB6121 SB6141 Cable Modem
  • Input Voltage: 100~240VAC 50/60Hz, Worldwide Use; Output: DC
  • Brand New AC to DC Power Adapter
  • CE/FCC/RoHS certified; Short-circuit Protection, Over Voltage Protection, Over Heat Protection
  • Compatibility: This Power adapter will work with Motorola Surfboard SB6120 SB6121 SB6141 Cable Modem AC DC ADAPTER Power Cord
Bestseller No. 11
ARRIS SURFboard SB6121 4x4 DOCSIS 3.0 Cable Modem (Renewed)-Black
  • This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original accessories plus a 90-day...
  • Requires CABLE Internet Service, if not sure your provider is CABLE call them to confirm. Does NOT work with Charter cable provider.
  • Compatible with MOST Major CABLE providers like Comcast/Xfinity, Cox, Time Warner, Mediacom, Bright House.
  • Wired modem only, does NOT include WIFI Router or VOIP Telephone adapter. Gigabit Ethernet port to connect to computer or Router for fast downloads.
  • Internet download speeds up to 172 Mbps and upload speeds up to 131 Mbps based on your Cable provider service. Good for streaming Video and gaming on...
SaleBestseller No. 12
Motorola MB7621 Cable Modem | Pairs with Any WiFi Router | Approved by Comcast Xfinity, Cox, and...
  • Model MB7621 is recommended for actual cable Internet service speeds up to 650 Mbps. Wirecutter rates this “the best modem for most people.” A...
  • This cable modem's 1 Gigabit Ethernet port connects to a WiFi router, computer, HDTV, game station, or streaming video device. Great for use with...
  • Requires cable Internet service.Approved by and for use with Comcast Xfinity and Xfinity X1, Cox, Charter Spectrum, Time Warner Cable, BrightHouse,...
  • Setup is fast and easy using the quick start guide.
  • Attractive, compact design minimizes shelf space, improves cooling, and extends product life while looking great in any home or office. A 2-year...
Bestseller No. 13
Motorola Surfboard SB6141 DOCSIS 3.0 High-Speed Cable Modem- Black (OEM Brown Box)
  • 10/100/1000 Mbps Ethernet port to connect with router or computer
  • DOCSIS 3.0 certified, capable of up to 343 Mbps and upload speeds up to 131 Mbps based on Cable provider service
  • Compatible with all major CABLE providers like Comcast/Xfinity, Cox, Charter, Time Warner, Mediacom, Bright House. Call your ISP to verify...
  • Compatible with Windows, Macintosh and UNIX computers
  • Front-panel LEDs indicate status and simplify troubleshooting
Bestseller No. 14
Replacement 12V Modem Power Cord AC DC Adapter Charger for Comcast Xfinity Motorola Surfboard...
  • You Will Get HIGH QUALITY 1 x 12V 2A 24W power supply with 6.6ft power cord, 1 x 5.5/2.1 DC female barrel connector to screw adapter.To meet more...
  • This 12V2A power adapter, suitable for Motorola ARRIS SURFboard SB6190 SB6183 Sb5100 ,Comcast Xfinity Motorola Surfboard ARRIS SURFboard SBG6700AC...
  • AC Adapter Input Voltage: 100-240V input 50/60HZ,; Output Voltage: 12V DC 2000 mA, 24 Watt max wattage. Adapt to 2.1mm * 5.5mm and 2.5mm * 5.5mm...
  • Safety Guarantee; This adapters was made with the highest quality materials.OVP, OCP, SCP Protection (OVP: Over Voltage output Protection. OCP: Over...
  • More energy-saving and power-saving, saving of electricity bill than ordinary equipment. 24hours response, 30 days money back guarantee, If you...
Bestseller No. 15
T-Power 12V (6.6ft) Ac Adapter Compatible with NETGEAR & Motorola Arris Surfboard DOCSIS Cable Modem...
  • T-Power - manufactured with the highest quality materials , POWER SPECS : Input Voltage Range: AC 100V - 240V , Power: 12V 2A
  • Compatible Models: NETGEAR Nighthawk X4 R7500 R7000 C3000 EX6200 AC2350 AC1900 N300 FVS318 GS108 Smart Extender Router , NETGEAR CM400 CM500 CM600...
  • Motorola 16x4 Cable Modem, Model MB7420 , MB7420-10 , MB7420-10-W , Motorola Surfboard SB6120 SB6121 SB6141 SB6180 SBG6580 SBG901 900 Cable Modem...
  • AD898F20 PN: DSA-20P-10, 332-10011-01 , 332-10613-01 DSA-0151F-12 , Netgear DGN2200 N 300 Router, DSA-20P-10 332-10011-01 DSA-0151F-12 , NetGear...
  • U.S. Robotics USR3453C Courier 56K Business Modem ; USR4000 Call Director ; USR5686G Wireless Broadband Router DSL Cable Modem , Compatible With...
Bestseller No. 16
Motorola SBG6580 Surfboard Extreme 3.0 Wireless Cable Modem Gateway - Latest Version (Renewed)
  • Compatible with Comcast Xfinity, Time Warner Cable, Charter, Cox, Cablevision, and more. Call internet service provider if not listed here. Requires...
  • Not compatible with: Verizon, AT&T, or CenturyLink
  • Two-in-one DOCSIS 3.0 Cable Modem + N300 WiFi Router
  • Docsis 3.0 Modem with 8 DOWNLOAD and 4 UPLOAD Channels capable of 343 Mbps download and 131 Mbps.
SaleBestseller No. 17
Motorola MG7700 Modem WiFi Router Combo with Power Boost | Approved by Comcast Xfinity, Cox and...
  • Fast 24x8 DOCSIS 3.0 cable Modem Plus a built-in AC1900 Dual band (2.4GHz and 5GHz) Wi-Fi Gigabit Router with four Gigabit (GigE) Ethernet ports,...
  • Eliminate up to 156 dollars per year in cable Modem rental fees. (Savings are shown for Comcast Xfinity and vary by cable service provider.) certified...
  • Built-in high-speed router with AC1900 wireless and Power boost - Provides internet access for Wi-Fi devices including smartphones, notebooks,...
  • Wireless power boost for better speed and range - Adds high-performance Wi-Fi power amplifiers to boost the wireless signals to the legal limit,...
SaleBestseller No. 18
Motorola MT7711 24X8 Cable Modem/Router with Two Phone Ports, DOCSIS 3.0 Modem, and AC1900 Dual Band...
  • THREE-IN-ONE CABLE MODEM, AC1900 ROUTER, AND XFINITY COMPATIBLE VOICE PORTS - Includes 24X8 DOCSIS 3. 0 cable modem, AC1900 Dual Band (2. 4GHz and...
  • REQUIRES COMCAST XFINITY INTERNET SERVICE. Approved by and for use with Comcast Xfinity and Xfinity X1. This product will not work with any other...
  • ELIMINATE UP TO 156 Dollars IN CABLE MODEM RENTAL FEES PER YEAR – Say goodbye to monthly rental fees and landline phone costs.
  • BUILT-IN HIGH-SPEED ROUTER WITH AC1900 WIRELESS AND POWER BOOST - provides Internet access for WiFi devices including smartphones, notebooks, tablets,...
  • WIRELESS POWER BOOST FOR BETTER SPEED AND RANGE - adds high-performance WiFi power amplifiers to boost the wireless signals to the legal limit, giving...
SaleBestseller No. 19
ARRIS SURFboard SB8200 DOCSIS 3.1 Cable Modem | Approved for Comcast Xfinity, Cox, Charter Spectrum,...
  • A Trusted Name in Home Connectivity: Better connectivity, better speed. The ARRIS SURFboard SB8200 DOCSIS 3.1 Cable Modem is designed to bring you...
  • Save Money: Own your modem and save. Reduce your cable bill up to $168 dollars per year in cable modem rental fees (Savings vary by cable service...
  • Modem Technology: DOCSIS 3.1 is the newest technology available from cable internet providers. Its 10x faster than DOCSIS 3.0, provides better...
  • Simple and Secure Set-up: Plug-in the device, download the SURFboard Central App, and follow the instructions to activate the modem. Connect to a...
  • Compatibility: The SURFboard SB8200 is compatible with major U.S. cable internet providers including Cox (Gigablast), Spectrum (Internet Gig), Xfinity...
SaleBestseller No. 20
ARRIS Surfboard S33 DOCSIS 3.1 Multi-Gigabit Cable Modem | Approved for Comcast Xfinity, Cox,...
  • A Trusted Name in Home Connectivity: Better connectivity, better speed. The ARRIS SURFboard S33 DOCSIS 3.1 Cable Modem is designed to bring you...
  • Save Money: Own your modem and save. Reduce your cable bill up to $168 dollars per year in cable modem rental fees (Savings vary by cable service...
  • Modem Technology: DOCSIS 3.1 is the newest technology available from cable internet providers. Its 10x faster than DOCSIS 3.0, provides better...
  • Simple and Secure Set-up: Plug-in the device, download the SURFboard Central App, and follow the instructions to activate the modem. Connect to a...
  • Compatibility: The SURFboard S33 is compatible with major U.S. cable internet providers including Cox (Gigablast), Spectrum (Internet Gig), Xfinity...

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  3. Specifications: How powerful they are can be measured.
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  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their motorola modem sb6121.
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FAQ:

Q: What is the Motorola sb6121 surfboard cable modem?

A: Motorola’s easy-to-use SB6121 SURFboard DOCSIS3.0 Cable Modem unlocks the potential of offering innovative high-bandwidth data and multimedia services to customers. The Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem provides operators with an economic option for providing Ultra-Broadband services.

Q: Why choose sb6121 for ultra broadband?

A: for providing Ultra-Broadband services, with four times the current maximum user data throughput approximating 160 Mbps in DOCSIS mode and 195 Mbps in EuroDOCSIS mode*, without the need for hybrid fiber coax (HFC) plant upgrade. Maximizing an operator’s current infrastructure investment, the SB6121 can be deployed without service interruption.

Q: What is the best cable modem on the market?

A: Motorola’s SB6121 cable modem is one of the best cable modems available on the market right now, if not THE best. It is a full DOCSIS-3.0 modem, but also fully backwards compatible with DOCSIS 2.0 and all the way back to DOCSIS 1.0. In short, it should work on any cable system.

Q: What is the difference between the sb6121 and the D-Link?

A: The Motorola SB6121’s colored graphical-icon LED indicators are much easier to identify and read from a distance than the D-Link’s closely spaced row of identical yellow-green LEDs. You can look at it from across the room and see two steady blues and one blinking amber, and know at a glance you’re in good shape.