If you have been searching for the best Arris 6121 Comcast, you probably have noticed that not all models have the same specifications, some can adapt better than others to different tasks. To help you choose the product you need, we have gathered 10 of the best Arris 6121 Comcast from different categories on the market.

Best Arris 6121 Comcast

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Our system have put together a list of options that will meet the needs of different types of buyers, so whether it’s price performance or its particular use, we have got you covered for more information on the products we have included links in the list down below which are updated for the best prices.

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7 new from $329.00
16 used from $182.59
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Part Number G36
Model G36
Warranty 2 Year Limited Warranty
Color Black
Release Date 2024-06-18T00:00:01Z

  • A Trusted Name in Home Connectivity: Get high speeds, low latency, and a two-in-one product! With the ARRIS SURFboard G36 Wi-Fi Cable Modem, you will increase your network capability and get ultra-fast streaming and downloading throughout your home. From a trusted brand with over 260 million modems sold and growing.
  • 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 provider). Certified for use with most U.S. cable internet service providers. For a complete list see additional details below. Wi-Fi Coverage: Up to 2,500 sq ft
  • Modem Technology: DOCSIS 3.1 is the newest technology available from cable internet providers. Its 10x faster than DOCSIS 3.0, provides better security, reduces lag while gaming & enables multi-gig networking (ability to run fast speeds on your copper cable from your internet provider).
  • Simple and Secure Set-up: Just plug-in, download the SURFboard Central App, and follow the step-by-step intrstuctions to activate the modem, set-up and customize your Wi-Fi network, and add devices to your home network! Once setup is complete, the app provides real-time monitoring of the devices on your network, enhanced parental controls like setting time limits and pausing internet and much more.
  • Compatibility: The SURFboard G36 is compatible with major U.S. cable internet providers including Cox (Gigablast), Spectrum (Internet Gig), Xfinity (Gigabit/Gigabit x2) and others. It's approved for cable internet speed plans up to 2.5 Gbps. Check your Internet Service Provider (ISP) website to confirm compatibility.

5 new from $218.00
21 used from $177.54
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Part Number s34
Model S34
Warranty 2 Year Manufacturer
Color White
Release Date 2024-07-31T00:00:01Z

  • 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 provider). Certified for use with most U.S. cable internet service providers. For a complete list see additional details below.
  • Modem Technology: DOCSIS 3.1 is the latest technology available from cable internet providers. Its 10x faster than DOCSIS 3.0, provides better security, reduces lag while gaming & enables multi-gig networking
  • Next Generation Upload Speed Optimized: Switchable upstream filters to support optimized upload service tiers (provider dependent).
  • 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 Wi-Fi router for networking.
  • Compatibility: The SURFboard S34 is compatible with major U.S. cable internet providers including Cox, Spectrum, Xfinity and others. It's approved for cable internet speed plans up to 2.5-Gbps. Check your Internet Service Provider (ISP) website to confirm compatibility.
  • The SURFboard S34 will future-proof your home with the latest DOCSIS 3.1 technology, supporting multi-gigablit internet plants. The SURFboard S34 features support for the the new, next generation upload speed tiers offered by cable internet providers. YWith a 2.5 Gbps Ethernet port plus an additional 1 Gbps Ethernet port it's capable of combined download speeds up to 3.5 Gbps. The S34 is the newest modem in the SURFboard lineup, delivering the fastest speeds and the latest technology without the premium rental cost.

7 new from $176.00
2 used from $177.20
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Features

Part Number S33
Model S33
Warranty 2 year limited warranty
Color White
Release Date 2024-04-01T00:00:01Z

  • 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 provider). Certified for use with most U.S. cable internet service providers. For a complete list see additional details below.
  • Modem Technology: DOCSIS 3.1 is the newest technology available from cable internet providers. Its 10x faster than DOCSIS 3.0, provides better security, reduces lag while gaming & enables multi-gig networking (ability to run fast speeds on your copper cable from your internet provider).
  • 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 Wi-Fi router for networking.
  • Compatibility: The SURFboard S33 is compatible with major U.S. cable internet providers including Cox (Gigablast), Spectrum (Internet Gig), Xfinity (Blast!/Extreme Pro) and others. It's approved for cable internet speed plans up to 2.5-Gbps. Check your Internet Service Provider (ISP) website to confirm compatibility.

5 new from $249.00
8 used from $228.16
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Part Number G20
Model G20
Warranty 1 Year Manufacturer
Color Black
Release Date 2024-09-22T00:00:01Z

  • A Trusted Name in Home Connectivity: Get high speeds, low latency, and a two-in-one product! With the ARRIS SURFboard G20 Wi-Fi Cable Modem, you will increase your network capability and get ultra-fast streaming, downloading and uploading throughout your home. From a trusted brand with over 260 million modems sold and growing.
  • Save Money: Own your modem and save. Reduce your cable bill up to $180 dollars per year in cable modem rental fees (Savings vary by cable service provider). Certified for use with most U.S. cable internet service providers. For a complete list see additional details below.
  • Modem Technology: DOCSIS 3.1 is the latest technology available from cable internet providers. Its 10x faster than DOCSIS 3.0, provides better security, reduces lag while gaming & enables multi-gig networking.
  • Next Generation Upload Speed Optimized: Switchable upstream filters to support optimized upload service tiers (provider dependent).
  • Simple and Secure Set-up: Just plug-in, download the SURFboard Central App, and follow the step-by-step intrstuctions to activate the modem, set-up and customize your Wi-Fi network, and add devices to your home network! Once setup is complete, the app provides real-time monitoring of the devices on your network, enhanced parental controls like setting time limits and pausing internet and much more.

5 new from $99.99
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Features

Part Number SB8200
Model SB8200
Warranty 1 Year Limited Warranty
Color White
Release Date 2024-04-01T00:00:01Z
Size Max Download Speed: 1.4 Gbps

  • Approved for Cox, Spectrum and Xfinity internet along with other US cable internet providers. Is NOT compatible with ATT, CenturyLink, Verizon, Froniter or other Fiber Optic, DSL or Satellite internet service providers.
  • Does NOT include Wi-Fi and Does NOT support cable digital voice service.
  • The SURFboard SB8200 is compatible with major U.S. cable internet providers including Cox, Spectrum, Xfinity and others. It is approved for cable internet speed plans up to 1 Gbps. Check your cable ISP website to confirm compatibility.
  • 32 downstream x 8 upstream DOCSIS 3.0 bonded channels, or 2 downstream x 2 upstream OFDM DOCSIS 3.1 channels.
  • Two 1-Gigabit Ethernet ports

3 new from $145.00
27 used from $40.99
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Part Number SBG7600AC2
Model SBG7600AC2
Warranty 2 years
Color Black
Release Date 2024-06-18T00:00:01Z

  • A Trusted Name in Home Connectivity: Get high speeds, better coverage, and a two-in-one product! With the ARRIS SURFboard SBG7600AC2 Wi-Fi Cable Modem, you will increase your network capability and get faster streaming and downloading throughout your home. From a trusted brand with over 260 million modems sold and growing.
  • 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 provider). Certified for use with most U.S. cable internet service providers. For a complete list see additional details below.
  • Modem Technology: DOCSIS 3.0 Cable Modem with AC2350 Wi-Fi Router that delivers high speed internet to your home devices.
  • Simple and Secure Set-up: Just plug-in, download the SURFboard Central App, and follow the step-by-step intrstuctions to activate the modem, set-up and customize your Wi-Fi network, and add devices to your home network! Once setup is complete, the app provides real-time monitoring of the devices on your network, enhanced parental controls like setting time limits and pausing internet and much more.
  • Compatibility: The SURFboard SBG7600AC2 is compatible with major U.S. cable internet providers including Cox, Spectrum, Xfinity and others. It's approved for cable internet speed plans up to 800 Mbps. Check your Internet Service Provider (ISP) website to confirm compatibility.

4 new from $34.99
1 used from $44.99
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Features

Part Number SB6190-RB
Model SB6190
Warranty 1 Year Limited Warranty
Color White
Is Adult Product
Release Date 2024-04-01T00:00:01Z
Size Max Download Speed: 1.4 Gbps

  • Approved for Cox, Spectrum and Xfinity internet along with other US cable internet providers. Is NOT compatible with ATT, CenturyLink, Verizon, Froniter or other Fiber Optic, DSL or Satellite internet service providers.
  • Does NOT include Wi-Fi and Does NOT support cable digital voice service.
  • The SB6190 is a DOCSIS 3.0 cable modem capable of bonding up to 32 downstream and 8 upstream channels. It's best for internet speed plans up to 800 Mbps. Plus, when you purchase your modem, not only are you powering your home network with the latest technology, but you also save money on modem rental fees. Own your modem and start saving today!
  • 32 downstream x 8 upstream DOCSIS 3.0 bonded channels
  • 1 Gigabit Ethernet port for connecting to a Wi-Fi router or other device.

5 new from $46.95
1 used from $37.17
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Features

Part Number SBG10
Model SBG10
Warranty 1 Year Limited Warranty
Color Black
Release Date 2024-04-02T00:00:01Z

  • Approved for Cox; Spectrum and Xfinity internet along with other US cable internet providers. Is NOT compatible with ATT; CenturyLink; Verizon; Froniter or other Fiber Optic; DSL or Satellite internet service providers.
  • Does NOT support cable digital voice service.
  • Setup and manage your network with the SURFboard Manager app
  • Compatible with major U S Cable Internet Providers including Cox; Spectrum; Xfinity & others. Cable internet service required. Not compatible with ATT; Verizon; CenturyLink or other DSL or Fiber internet providers
  • 16 downstream & 4 upstream channels. Best for cable internet service plans up to 400 Mbps.

7 new from $99.00
29 used from $30.66
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Features

Part Number SBG10
Model SBG10
Warranty 2 years
Color Black
Release Date 2024-06-18T00:00:01Z
Size Max Download Speed: 686 Mbps

  • A Trusted Name in Home Connectivity: Get high speeds, better coverage, and a two-in-one product! With the ARRIS SURFboard SBG10 Wi-Fi Cable Modem, you will increase your network capability and get fast streaming and downloading throughout your home. From a trusted brand with over 260 million modems sold and growing.
  • 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 provider). Certified for use with most U.S. cable internet service providers. For a complete list see additional details below.
  • Modem Technology: DOCSIS 3.0 is a reliable, broadly available, and affordable technology that delivers high speed internet to your home devices.
  • Simple and Secure Set-up: Just plug-in, download the SURFboard Central App, and follow the step-by-step intrstuctions to activate the modem, set-up and customize your Wi-Fi network, and add devices to your home network! Once setup is complete, the app provides real-time monitoring of the devices on your network, enhanced parental controls like setting time limits and pausing internet and much more.
  • The SURFboard SBG10 is compatible with major U.S. cable internet providers including Cox, Spectrum, Xfinity and other cable operators across the country. Check your Internet Service Provider (ISP) website to confirm compatibility.

18 new from $56.99
26 used from $21.00
Free shipping
Amazon.com

Features

Part Number SB6190
Model SB6190
Warranty 2 Year Limited Warranty
Color White
Is Adult Product
Release Date 2024-04-01T00:00:01Z
Size Max Download Speed: 1.4 Gbps

  • Power your home network with the SB6190 to deliver fast speeds and a reliable connection to the Internet. The SURFboard SB6190 is a DOCSIS 3.0 modem that's capable of download speeds up to 1.4 Gbps.
  • Get internet speeds up to 1.4 Gbps for downloads and 262 Mbps for uploads based on your cable ISP subscription.
  • Gigabit Ethernet port connects to your computer or router for fast downloads.
  • Stream HD video and games on multiple devices at the same time.
  • Download 32 channels and upload 8 channels to future proof your modem as your Cable ISP enhances service offerings.