ARRIS SURFboard S33 DOCSIS 3.1 Cable Details & Review

The ARRIS SURFboard S33 is a sleeker design than all of the prior SURFboard modems. The S33 is a DOCSIS 3.1 cable modem capable of multi-gig speeds up to 3.5 Gbps. This is accomplished by using both of the Ethernet ports, one a 2.5 Gbps port and the other a 1 Gbps port.

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ARRIS S33 Cable Modem Review

With CommScope now owning the ARRIS brand name, the design and enclosure of the SURFboard S33 have a sleeker design. It’s clear they are trying to mix things up a little bit and for the better. In addition to the newer design, the S33 features the latest DOCSIS technology, DOCSIS 3.1. This makes this cable modem perfect for gamers and streaming fanatics. Couple the S33 with a WiFi-6 router and you’ll be on top of the tech game.

The S33 is ideal for XFINITY, COX, Spectrum, and other major ISPs with 1 Gbps speeds or higher. This modem is backwards compatible to 3.0 and lower speeds. However, buying a 3.1 modem ensures you’ll be ready for any future upgrades.

ARRIS S33 Availability

As Of 01/18/2021

ARRIS SURFBoard S33 DOCSIS 3.1 Cable Modem front view
ARRIS SURFboard S33 Cable Modem Back Ports View

ARRIS SURFboard S33 Side View

ARRIS SURFboard S33 Product Description

The ARRIS SURFboard S33 is a DOCSIS 3.1 Cable Modem that delivers the fastest speeds and the latest technology. With a 2.5 Gigabit and a 1 Gigabit Ethernet port, the S33 enables a multi-gig experience for things like online gaming, 4K video streaming, and more. It’s best for cable internet speed plans up to 2.5 Gbps and setup is simple with an easy-to-use app. It’s compatible with any Wi-Fi router and saves you money on monthly rental fees. Upgrade your home network with an ARRIS SURFboard S33 DOCSIS 3.1 Cable Modem.

CommScope / ARRIS Product Description

ARRIS SURFboard S33 Overview

The S33 was first available in November of 2020.

Multi-Gigabit Networking

Experience the fastest speeds available from your cable Internet plan. The S33 features a 2.5 Gigabit Ethernet port and a second 1-Gigabit Ethernet port enabling a multi-Gigabit networking experience for your home network.

DOCSIS 3.1 Technology

The SURFboard S33 utilizes DOCSIS 3.1 technology – the latest technology offered by cable internet providers. It’s backwards compatible to DOCSIS 3.0 with 32×8 DOCSIS 3.0 bonded channels.


Compatible with major U.S. Cable Internet providers including Cox, Spectrum, Xfinity, and many others. Compatible with any Wi-Fi Router.

Save on Monthly Rental Fees

Experience value at its best. The SURFboard S33 cable modem can save you up to $180 per year in rental fees. Stop renting and own yours today!

Worry Less

Experience worry-free usage. The S33 is designed by ARRIS and perfected by decades of experience. The product warranty of two years ensures your investment in your home network is protected.

ARRIS SURFboard S33 Videos

ARRIS SURFboard S33 Video

ARRIS S33 Setup & Activation

S33 Manuals & Available Firmware Updates

As of Jan. 17, 2021, there are no firmware updates available as this modem is only a month on the market.

Need help with your S33? Try the new ARRIS tool, ANA,

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