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ARRIS · Cable Modems

SURFboard DOCSIS 3.1

Model SB8200

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A DOCSIS 3.1 cable modem with two 1 Gigabit Ethernet ports, best for cable internet speed plans up to 1 Gbps.

  • 1 Gbps port

Works with

  • Cox, Spectrum, Xfinity and other major US cable internet providers; the maker advises confirming support for the model with your provider

Is it for you?

A DOCSIS 3.1 cable modem with two 1 Gigabit Ethernet ports, best for cable internet speed plans up to 1 Gbps, certified for use with major US cable providers such as Cox, Spectrum and Xfinity.

Choose it if these matter

  • DOCSIS 3.1 support with 32x8 DOCSIS 3.0 bonded channels, ready for providers that have upgraded their networks
  • Two 1 Gb Ethernet ports let you run a router and a second wired device, or a link-aggregation pair, off one modem
  • CableLabs certified and tested and qualified by Cox, Comcast Xfinity and Charter Spectrum

Skip it if these rule it out

  • No built-in Wi-Fi and no digital voice service capability, so it needs a separate router and does not suit phone-bundle plans
  • Best for plans up to 1 Gbps with 1 Gb Ethernet ports, unlike the maker's newer S33 and S34 which pair a 2.5 Gb port with 2.5 Gbps plan ratings
  • No Amazon listing is linked from the maker's own product page for this model, so buying it means searching for the exact model number

Good for: Budget · Home office · Apartments

Which version should you buy?

Selected package: SB8200 US cable modem.

Region

  • SB8200 US cable modem

    This page

    Model: SB8200

    What differs
    The US version of the DOCSIS 3.1 modem, certified for Cox, Spectrum, Xfinity and other major US cable providers.
    Best for
    Owners of US cable internet plans up to 1 Gbps who want to stop renting a modem.
    Manufacturer details · SB8200 US cable modem

Related models and generations

  • S33 (successor) Model: S33

    The maker's newer DOCSIS 3.1 modem rated for plans up to 2.5 Gbps with one 2.5 Gb and one 1 Gb Ethernet port.

    Buyers on multi-gig or top-tier cable plans.

    View S33 (successor)

  • S34 (successor) Model: S34

    The maker's latest DOCSIS 3.1 modem rated for plans up to 2.5 Gbps with next-gen upstream support, one 2.5 Gb and one 1 Gb Ethernet port.

    Buyers whose provider supports next-generation upstream upgrades.

Watch out

  • The SB8200 has two 1 Gb Ethernet ports; the S33 and S34 have a 2.5 Gb port, which the newer modems need for their 2.5 Gbps plan ratings.
  • The SB8200 is a modem only: it has no Wi-Fi, so a separate router is required.

Right connection. Right box.

Start at the wallBuy the right kind of box

How does internet arrive?

The cable coming into your home decides what belongs here.

Internet service type

Choose your connection before choosing a modem.

The cable modem candidateApproval comes first

ARRIS SB8200

Fastest Ethernet
1 Gbps

Start with the service

A modem is not a Wi-Fi upgrade.

A DOCSIS cable modem translates cable service to Ethernet. Your router handles your home network.

The trap to avoid

A cable modem does not replace a fiber ONT or a DSL modem.

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Source specs & exact version

ARRIS SURFboard SB8200 DOCSIS 3.1 Cable Modem

SB8200 US cable modem

Recorded model: SB8200

Specifications checked 2026-11-10.

DOCSIS technology
DOCSIS 3.1
Gigabit Ethernet ports
Two 1 Gb Ethernet ports
DOCSIS 3.1 channels
2 downstream x 2 upstream OFDM channels
DOCSIS 3.0 bonded channels
32 downstream x 8 upstream
Built-in Wi-Fi
No
Digital voice service capability
No

Maker compatibility is a claim. Current ISP approval for your exact tiers and address is not verified here.

Photo credit: manufacturer image source ↗

Specifications explain hardware limits. No performance tests are claimed.

Alternatives to consider

Full specifications (11)
Best for cable internet speed plans
Up to 1 Gbps
DOCSIS technology
DOCSIS 3.1
Gigabit Ethernet ports
Two 1 Gb Ethernet ports
DOCSIS 3.1 channels
2 downstream x 2 upstream OFDM channels
DOCSIS 3.0 bonded channels
32 downstream x 8 upstream
Compatibility
Major US cable providers; tested and qualified by Cox, Comcast Xfinity and Charter Spectrum
Built-in Wi-Fi
No
Digital voice service capability
No
Wired speeds
Up to 2 Gbps
Certification
CableLabs certified and designed to meet industry standards for US cable internet service providers
Warranty
2-year limited warranty

Setup notes

Setup: No drivers needed: the modem activates with your cable provider. Register the modem's MAC address with the provider, then connect a router to either 1 Gb Ethernet port.

Sources: ARRIS specifications · surfboard.com. Photos: ARRIS · cdn11.bigcommerce.com. Specifications checked November 10, 2026. Spotted an error? Tell us.

ARRIS SURFboard DOCSIS 3.1We may earn a commission