S33

SURFboard® DOCSIS® 3.1 Cable Modem

With a 2.5 Gbps Ethernet port plus an additional 1 Gbps Ethernet port, the SURFboard S33 DOCSIS 3.1 Cable Modem is the perfect solution for multi-Gigabit home networking!

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Features

DOCSIS 3.1 cable modem best for cable internet speed plans up to 2.5 Gbps

One 2.5 Gigabit Ethernet Port and One 1 Gigabit Ethernet Port

2 downstream x 2 upstream OFDM DOCSIS 3.1 channels

32 downstream x 8 upstream DOCSIS 3.0 bonded channels

Compatible with Cox, Spectrum, Xfinity and other major US cable internet providers

Easily setup your modem with the SURFboard Central app

2 Year Limited Warranty

SUPPORT

Technical Specs

Best for Cable Internet Speed Plans Up to 2.5 Gbps
DOCSIS Technology DOCSIS 3.1
Gigabit Ethernet Ports One 2.5 GB and one 1 GB Ethernet Port
Compatibility Major US Cable Providers
Built-in Wi-Fi No
Digital Voice Service Capability No
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Compatible Service Providers

  • Advanced Stream
  • Altice Optimum
  • Altice Suddenlink
  • Armstrong
  • Atlantic Broadband
  • CableOne/Sparklight
  • Click CableTV
  • Comcast/Xfinity
  • Cox
  • Grande Communications
  • New Wave/Sparklight
  • Mediacom
  • RCN
  • Service Electric
  • Spectrum
  • Wave Broadband
  • WOW
  • Zito Media

Don't see your provider above?
Select your provider in the list below and view all products compatible with it.

Cable Modem Comparison

Cable Modems Best for Cable Internet Speed Plans DOCSIS Technology Gigabit Ethernet Ports Compatibility Built-in Wi-Fi Digital Voice Service Capability Wired Speeds
S33 Up to 2.5 Gbps DOCSIS 3.1 One 2.5 GB and one 1 GB Ethernet Port Major US Cable Providers No No N/A
SB8200 Up to 1 Gbps DOCSIS 3.1 Two 1 GB Ethernet Ports Major US Cable Providers No No Up to 2 Gbps
SB6190 Up to 800 Mbps DOCSIS 3.0 One 1 GB Ethernet Port Major US Cable Providers No No N/A
SB6183 Up to 400 Mbps DOCSIS 3.0 One 1 GB Ethernet Port Major US Cable Providers No No N/A
Latest Technology CM_SB8200_Hero_right.png

SB8200
SURFboard® DOCSIS® 3.1 Cable Modem

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CM_SB6190_Hero_right.png

SB6190
SURFboard® DOCSIS® 3.0 Cable Modem

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Most Economical CM_SB6183_Hero_right.png

SB6183
SURFboard® DOCSIS® 3.0 Cable Modem

Learn More
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Add SURFboard mAX Whole Home Mesh Wi-FI

Now you can bring those Wi-Fi enabled devices upstairs, downstairs, in the back yard, or out on the deck. The new SURFboard mAX Mesh Wi-Fi 6 System unleashes your home wireless network like never before. After all, what good is Wi-Fi without the freedom?

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Meet our lineup.

Cable Modems

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Wi-Fi Cable Modems

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Mesh Networking

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Xfinity Products

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SURFboard Central

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All Products

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Reviews for S33