---
product_id: 424077016
title: "Arris (S33-RB) - Cable Modem - DOCSIS 3.1 Multi-Gigabit Cable Modem for Comcast Xfinity, Cox, Spectrum & More 1 & 2.5 Gbps Ports 2.5 Gbps Max Internet Speeds 4 OFDM Channels 1 Year Warranty - Renewed"
brand: "arris"
price: "€ 232.79"
currency: EUR
in_stock: true
reviews_count: 8
category: "Amazon Renewed"
url: https://www.desertcart.com.cy/products/424077016-arris-s33-rb-cable-modem-docsis-3-1-multi-gigabit
store_origin: CY
region: Cyprus
---

# 2.5 Gbps max speed DOCSIS 3.1 tech with 4 OFDM channels Dual Ethernet ports (2.5 Gbps + 1 Gbps) Arris (S33-RB) - Cable Modem - DOCSIS 3.1 Multi-Gigabit Cable Modem for Comcast Xfinity, Cox, Spectrum & More 1 & 2.5 Gbps Ports 2.5 Gbps Max Internet Speeds 4 OFDM Channels 1 Year Warranty - Renewed

**Brand:** arris
**Price:** € 232.79
**Availability:** ✅ In Stock

## Summary

> 🚀 Unlock Multi-Gig Speeds & Slash Your Cable Bill Today!

## Quick Answers

- **What is this?** Arris (S33-RB) - Cable Modem - DOCSIS 3.1 Multi-Gigabit Cable Modem for Comcast Xfinity, Cox, Spectrum & More 1 & 2.5 Gbps Ports 2.5 Gbps Max Internet Speeds 4 OFDM Channels 1 Year Warranty - Renewed by arris
- **How much does it cost?** € 232.79 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/424077016-arris-s33-rb-cable-modem-docsis-3-1-multi-gigabit)

## Best For

- arris enthusiasts

## Why This Product

- Trusted arris brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Next-Gen DOCSIS 3.1:** Future-proof your setup with the latest cable modem tech that’s 10x faster and more secure than DOCSIS 3.0.
- • **Blazing Multi-Gig Speeds:** Experience up to 2.5 Gbps wired internet for seamless streaming, gaming, and remote work without lag.
- • **Dual Ethernet Powerhouse:** Connect multiple devices with a 2.5 Gbps port plus a 1 Gbps port for ultimate home network flexibility.
- • **Save Big, Own Your Modem:** Cut rental fees and save up to $168/year by owning this certified modem compatible with top US cable ISPs.
- • **Plug, Play & Secure Setup:** Get online fast with simple activation via the SURFboard Central App—no tech headaches, just pure speed.

## Overview

The Arris S33-RB is a DOCSIS 3.1 cable modem designed for Comcast Xfinity, Cox, Spectrum, and most US cable providers. Featuring dual Ethernet ports (2.5 Gbps and 1 Gbps), it delivers combined speeds up to 3.5 Gbps. This renewed modem offers cutting-edge technology, easy app-based setup, and a 1-year warranty, enabling users to save on rental fees while future-proofing their home network.

## Description

Your multi-Gigabit home network will be ready with the SURFboard S33. A DOCSIS 3.1 cable modem. With 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 S33 is the fastest modem in the SURFboard lineup delivering the fastest speeds and the latest technology without the premium rental cost.

Review: Works perfectly with Comcast/Xfinity. Super easy to setup, good quality at a good price. - Works perfectly with Comcast/Xfinity. Super easy to setup, good quality at a good price. Provides a much higher speed than older units.
Review: Fast, reliable and easy to set up. Certainly NOT the bottleneck in my internet connection. - Great modem. Did self install on Xfinity and cabled its 2.5GB port to my router. Easy set up, high-speed and super reliable.

## Features

- Approved for Cox, Spectrum and Xfinity internet along with other US cable internet providers. Is NOT compatible with ATT, CenturyLink, Verizon, Frontier or other Fiber Optic, DSL or Satellite internet service providers.
- Does NOT include Wi-Fi and Does NOT support cable digital voice service.
- 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09VTJR48F |
| Best Sellers Rank | #1,012 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #12 in Computer Networking Modems #71 in Renewed Computers & Accessories |
| Brand | ARRIS |
| Built-In Media | ARRIS Surfboard S33-RB DOCSIS 3.1 2.5Gbps Cable Modem - Xfinity, Spectrum, Cox & More (RENEWED) |
| Color | White |
| Compatible Devices | Personal Computer |
| Connectivity Technology | Ethernet |
| Customer Reviews | 4.1 out of 5 stars 439 Reviews |
| Data Transfer Rate | 2500 Megabits Per Second |
| Internet Service Provider | Charter, Comcast Xfinity, Cox, Most Regional Cable Internet Providers, NOT compatible with ATT, Verizon, Centurylink, Google Fiber, Suddenlink |
| Internet service provider | Charter, Comcast Xfinity, Cox, Most Regional Cable Internet Providers, NOT compatible with ATT, Verizon, Centurylink, Google Fiber, Suddenlink Internet service provider Charter, Comcast Xfinity, Cox, Most Regional Cable Internet Providers, NOT compatible with ATT, Verizon, Centurylink, Google Fiber, Suddenlink See more |
| Item Type Name | Docsis 3.1 Modem |
| Manufacturer | CommScope |
| Maximum Downstream Data Transfer Rate | 2500 Megabits Per Second |
| Maximum Upstream Data Transfer Rate | 2500 Megabits Per Second |
| Modem Type | Cable |
| Number of Ethernet Ports | 2 |
| Number of Ports | 2 |
| UPC | 612572216828 |
| Warranty Description | 1 Year Limited Warranty |

## Product Details

- **Brand:** ARRIS
- **Internet service provider:** Charter, Comcast Xfinity, Cox, Most Regional Cable Internet Providers, NOT compatible with ATT, Verizon, Centurylink, Google Fiber, Suddenlink
- **Connectivity Technology:** Ethernet
- **Compatible Devices:** Personal Computer
- **Color:** White

## Images

![Arris (S33-RB) - Cable Modem - DOCSIS 3.1 Multi-Gigabit Cable Modem for Comcast Xfinity, Cox, Spectrum & More 1 & 2.5 Gbps Ports 2.5 Gbps Max Internet Speeds 4 OFDM Channels 1 Year Warranty - Renewed - Image 1](https://m.media-amazon.com/images/I/41PFHrcYE9L.jpg)

## Questions & Answers

**Q: Is it compatable/approved with/for Xfinity?**
A: The Arris S33 Docsis 3.1 modem is currently only compatible with the 1.2GBPS Internet Plan with Xfinity but they say they are working on support for their Gig 2X plan that allows 2GBPS download and 400mbps upload at the moment, but this internet plan is not available yet for 3rd party modems. You have to rent their modem monthly to use the Gig 2X plan right now. They do not have a timeline yet, but I believe that the firmware update from Xfinity will be available VERY soon so that "MidSplit" works with their service. The Arris S33 modem IS compatible with MidSplit...Xfinity just needs to finish testing for third party modems and send a firmware update to existing customers so they can take advantage of the MidSplit feature and get 2GBPS internet without having to rent their shoddy equipment.

**Q: What is the Warranty**
A: ARRIS offers a 2 year limited warranty on new models, 1 year for refurbished products.

**Q: was the Mac address release from previous device owner account? What happens if not?**
A: It depends on the backend provisioning system of your internet service provider. Ideally, you should be able to use a used/refurb device provided the service provider's provisioning system automatically removes the previous owner's information from the device

**Q: When does the certificate expire?**
A: The DOCSIS certificate. It's rated as 3.1. Comcast is expiring the ones that are 3.0. So I think this one should be good until the next security upgrade in a few years. Hard to say for sure. My Zoom is 3.0 and it was made back in 2014. Only just now being "expired."

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works perfectly with Comcast/Xfinity. Super easy to setup, good quality at a good price.
*by J***M on December 5, 2025*

Works perfectly with Comcast/Xfinity. Super easy to setup, good quality at a good price. Provides a much higher speed than older units.

### ⭐⭐⭐⭐⭐ Fast, reliable and easy to set up. Certainly NOT the bottleneck in my internet connection.
*by M***I on December 4, 2025*

Great modem. Did self install on Xfinity and cabled its 2.5GB port to my router. Easy set up, high-speed and super reliable.

### ⭐ Easy to Install, if it Works
*by D***S on September 15, 2023*

For a point of reference, I'm a network engineer. This is easy to set up, if it works for your specific application. The problem with it is, there is no way to easily configure things such as the internal DHCP server or certain security features you'd have access to with an older modem. If your firewall on your network will not receive a DHCP address correctly from this device, you have little options for resolving the issue. I wiresharked the connection and my firewall was failing to negotiate an IP lease from the modem. With no way to access any meaningful interface other than the web interface on the modem (which is useless since it only shows information and does not allow any configurations to be edited) or using the completely worthless Arris android app, which is just informational and does nothing to configure the device, you're screwed. I've had the device randomly fail several times. Each time the DHCP server in the device failed to hand out an IP address to my firewall. One time, the cable company pushed out a firmware upgrade which broke it. The firmware upgrades have also removed my passwords and reset them to the default. Bring back user editable configurations and my rating would go up. But this canned one size fits all unconfigurable crap is a pain in the butt.

## Frequently Bought Together

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-02-22*