---
product_id: 267549500
title: "ARRIS SURFboard S33 DOCSIS 3.1 Multi‑Gig Cable Modem | 2.5Gbps + 1Gbps Ethernet Ports | Works with Xfinity, Cox, Spectrum | For Cable Internet Plans up to 2.5Gbps | Modem Only, Router Required"
brand: "arris"
price: "A$441"
currency: AUD
in_stock: true
reviews_count: 4
category: "Arris"
url: https://www.desertcart.com.au/products/267549500-arris-surfboard-s33-docsis-3-1-multi-gig-cable-modem
store_origin: AU
region: Australia
---

# 2.5Gbps Multi-Gig Speed Dual Ethernet Ports (2.5Gb + 1Gb) CableLabs Certified Compatibility ARRIS SURFboard S33 DOCSIS 3.1 Multi‑Gig Cable Modem | 2.5Gbps + 1Gbps Ethernet Ports | Works with Xfinity, Cox, Spectrum | For Cable Internet Plans up to 2.5Gbps | Modem Only, Router Required

**Brand:** arris
**Price:** A$441
**Availability:** ✅ In Stock

## Summary

> ⚡ Future-Proof Your Internet Speed with SURFboard S33!

## Quick Answers

- **What is this?** ARRIS SURFboard S33 DOCSIS 3.1 Multi‑Gig Cable Modem | 2.5Gbps + 1Gbps Ethernet Ports | Works with Xfinity, Cox, Spectrum | For Cable Internet Plans up to 2.5Gbps | Modem Only, Router Required by arris
- **How much does it cost?** A$441 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/267549500-arris-surfboard-s33-docsis-3-1-multi-gig-cable-modem)

## 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

- • **Compact & Modern:** Sleek, space-saving design with intuitive LED indicators keeps your setup clean and smart.
- • **Save Big, Own It:** Ditch monthly rental fees by owning your modem—compatible with top ISPs like Xfinity, Cox, and Spectrum.
- • **Plug & Play Simplicity:** Effortless setup—just connect, activate, and pair with your Wi-Fi router for instant multi-Gig home internet.
- • **Blazing Multi-Gig Speeds:** Unlock ultra-fast internet plans up to 2.5 Gbps for seamless 4K streaming, gaming, and downloads.
- • **Dual Ethernet Powerhouse:** 2.5Gbps port plus 1Gbps backup for versatile, high-speed wired connections.

## Overview

The SURFboard S33 DOCSIS 3.1 cable modem delivers blazing multi-Gigabit speeds up to 2.5 Gbps, featuring dual Ethernet ports (2.5Gbps + 1Gbps) for versatile connectivity. Certified by CableLabs, it works seamlessly with major US ISPs like Xfinity, Cox, and Spectrum. Its compact design and easy plug-and-play setup make it the perfect upgrade for professionals seeking ultra-fast, reliable internet while eliminating costly rental fees. Note: Requires a separate Wi-Fi router for wireless coverage.

## Description

The S33 combines DOCSIS 3.1 technology with a 2.5 Gigabit Ethernet port to unlock multi‑Gig internet plans and ultra‑responsive streaming and gaming. Buy it once and stop paying monthly rental fees!

Review: Round Two for the ARRIS S33: Lightning Struck My First One, But I’m Still Hooked - This is my second time buying the ARRIS S33 DOCSIS 3.1 multi-gigabit cable modem—because lightning apparently decided my internet setup was too good and struck down my first one like Zeus himself was having a bad day. RIP, my beloved modem, you lasted just long enough to show me what true speed feels like before being vaporized in a flash. But honestly? I’m not mad. The ARRIS S33 is a beast. It supports DOCSIS 3.1, meaning it’s ready for the next-generation high-speed cable internet—like, up to 2 Gbps downstream and 1 Gbps upstream (if your ISP and plan are playing along). It’s also backwards compatible with DOCSIS 3.0, so if your ISP hasn’t fully upgraded yet, no worries. Installation is impressively painless. Plug and play, with support for IPv4 and IPv6, and it handles channel bonding like a champ—aggregating multiple channels to maximize throughput and minimize lag. I’ve thrown all kinds of traffic at it: 4K Netflix, intense online gaming sessions, video calls where my face looks mostly presentable, and it doesn’t even break a sweat. The only caveat: lightning doesn’t play nice with electronics. So if you live somewhere prone to storms like me, consider a surge protector or UPS, unless you want to keep buying backup modems like this is a weird hobby. Bottom line: the ARRIS S33 is fast, reliable, and future-proof enough to handle whatever Comcast Xfinity throws at it. Just pray to the weather gods to keep your modem alive.
Review: Best modem I've found. A brand I've used for many years. - Hard to find in store anymore. But I refuse to rent a Modem from the cable company. Works perfect. My advice, make sure your surge protector is good enough. I use UPS backups. Their surge protection isn't enough. I bought a separate surge protector to plug my UPSs to plug into.

## Features

- Multi‑Gig speed for today & tomorrow: DOCSIS 3.1 performance supports cable internet plans up to 2.5 Gbps, delivering ultra‑fast streaming, gaming, and downloads.
- Save on rental fees: Own your modem and avoid monthly equipment charges - check with your cable provider for plan compatibility.
- Compact, modern design: Space‑saving footprint with simple LED indicators for power, upstream/downstream, and online status.
- Easy setup: Connect cable, power on, and activate with your cable provider. Then connect a Wi‑Fi router to the Ethernet port for home Wi-Fi coverage.
- Modem only: This cable modem requires a separate Wi-Fi router or mesh system for home Wi-Fi network.
- Fast Ethernet: Provides a 2.5 Gigabit Ethernet port to support connecting high speed Wi-Fi routers. Plus, a 1 Gigabit Ethernet port lets you connect an additional wired device or backup handoff (service provider configuration dependent).
- Provider compatibility: All SURFboard modems are CableLabs certified to work across major US Internet Service Providers. Tested and qualified for use with Cox, Xfinity, and Spectrum. Check with your provider to confirm device model support
- Not compatible with fiber, DSL, or satellite services.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08FMSC5WZ |
| Best Sellers Rank | #4,318 in Electronics ( See Top 100 in Electronics ) #6 in Computer Networking Modems |
| Customer Reviews | 4.1 4.1 out of 5 stars (3,949) |
| Date First Available | October 4, 2020 |
| Item Weight | 14.4 ounces |
| Item model number | S33 |
| Manufacturer | Vantiva |
| Product Dimensions | 4.74 x 1.8 x 5.14 inches |

## Product Details

- **Brand:** ARRIS
- **Compatible Devices:** Router, Personal Computer, Laptop gaming console
- **Connectivity Technology:** Ethernet (1 - 2.5Gb and 1 – 1Gb)
- **Internet service provider:** Charter, Comcast, Cox, Spectrum, Xfinity
- **Product Dimensions:** 5.25"L x 1.8"W x 5.24"H

## Images

![ARRIS SURFboard S33 DOCSIS 3.1 Multi‑Gig Cable Modem | 2.5Gbps + 1Gbps Ethernet Ports | Works with Xfinity, Cox, Spectrum | For Cable Internet Plans up to 2.5Gbps | Modem Only, Router Required - Image 1](https://m.media-amazon.com/images/I/41VU+PfcQeL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Can you use both ethernet ports at the exact same time?**
A: Depends on your ISP. The company I work for gives you 2 public IP addresses and you can get any combo of 2 computers, 1 computer and one router or 2 routers. You WILL NOT however get full speed on both at the same time but not half either. The modems we use now have only one ethernet port but if you hook up a simple switch you get both IPs through it. But ONLY 2.

**Q: Will this support xfinity extreme 1200mbps ? it's not on the supported device list.**
A: The Arris S33 is a DOCIS 3.1 capable device 32 x 8 rated for speeds up to 2.5 Gb. While the modem is indeed on Xfinity supported device list (check detailed discussions on dslreports.com), what matters is your router. Ensure you have a router capable of 1+Gb speeds.

**Q: Does this modem support snmp?**
A: NO.  I wish that wasn't the case, but we have no SNMP access.  No Arris home modems support user facing SNMP. The cable provider has management, but SNMP isn't exposed to the home network.    From Arris: "SNMP (Simple Network Management Protocol) is not supported in Motorola Home Networking products. SNMP is included in Motorola Cable Modem and Home Gateway products, but it is intended for use only by the Cable Provider. There is no direct access to SNMP MIBs for the end-user."

**Q: Is one port for the router and the other port can be used for hardwiring a device (computer, etc) directly to modem?**
A: The second port can only be used if connected to a separate/different IP. In other words, your ISP will have to give you 2 separate IPs. in order to use the second port.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Round Two for the ARRIS S33: Lightning Struck My First One, But I’m Still Hooked
*by D***T on September 22, 2025*

This is my second time buying the ARRIS S33 DOCSIS 3.1 multi-gigabit cable modem—because lightning apparently decided my internet setup was too good and struck down my first one like Zeus himself was having a bad day. RIP, my beloved modem, you lasted just long enough to show me what true speed feels like before being vaporized in a flash. But honestly? I’m not mad. The ARRIS S33 is a beast. It supports DOCSIS 3.1, meaning it’s ready for the next-generation high-speed cable internet—like, up to 2 Gbps downstream and 1 Gbps upstream (if your ISP and plan are playing along). It’s also backwards compatible with DOCSIS 3.0, so if your ISP hasn’t fully upgraded yet, no worries. Installation is impressively painless. Plug and play, with support for IPv4 and IPv6, and it handles channel bonding like a champ—aggregating multiple channels to maximize throughput and minimize lag. I’ve thrown all kinds of traffic at it: 4K Netflix, intense online gaming sessions, video calls where my face looks mostly presentable, and it doesn’t even break a sweat. The only caveat: lightning doesn’t play nice with electronics. So if you live somewhere prone to storms like me, consider a surge protector or UPS, unless you want to keep buying backup modems like this is a weird hobby. Bottom line: the ARRIS S33 is fast, reliable, and future-proof enough to handle whatever Comcast Xfinity throws at it. Just pray to the weather gods to keep your modem alive.

### ⭐⭐⭐⭐⭐ Best modem I've found. A brand I've used for many years.
*by M***N on February 1, 2026*

Hard to find in store anymore. But I refuse to rent a Modem from the cable company. Works perfect. My advice, make sure your surge protector is good enough. I use UPS backups. Their surge protection isn't enough. I bought a separate surge protector to plug my UPSs to plug into.

### ⭐ The Surfboard S33 is a very problematic modem by ARRIS.
*by A***R on January 4, 2024*

This Arris Surfboard S33 modem runs extremely, extremely HOT 🔥🔥🔥! The coverage is sporadic and glitches out to my router all the time. My Asus router works fine. Arris has a problem with this modem overheating. It does not vent well. It desperately needs revisioning. Start over, do it right! Don't cheap out on your customer to save a few pennies. They keep your business in business. Heat sinks or an internal fan or both need to be implemented and utilized. A better case to allow for improved air flow should also be considered. Arris must know about this design flaw and be okay with it. The modem will just eventually burn itself out. Electronics will eventually break down by continuous heat and overheating. This is just hot to the touch, and it is unacceptable. I am very unhappy with this company and their modem. It could even possibly be a fire hazard. I give it a negative rating and negative stars. I do not endorse this hunk of junk by Arris. Choose another company. There are so many other better options available. Learn from my mistake. This is a terrible excuse for what a modem should be. Update 1-10-24 This is the most dismal, disappointing modem that I have ever owned constantly dropping the connection. This morning, I had no connection to the internet. I had to unplug everything. I thought maybe if I rebooted the modem and waited 30 minutes and then plugged it back in, it might help clear it. IT DID NOT! I'm getting abysmal download speeds of 2 and 3 mb/s. It finally, finally connected to my router and 2 and 3 mb download speeds is what I have. It did not want to connect. This is an expensive disaster and Arris should be ashamed of the absolute inferior quality product they are putting out to the public right now. Absolutely enraged! 🤬 I'll be returning this item. I hope nobody buys this as a used modem.

## Frequently Bought Together

- ARRIS (S33) - Cable Modem - Fast DOCSIS 3.1 Multi-Gigabit Cable Modem For Comcast Xfinity, Cox, Spectrum & More 1 & 2.5 Gbps Ports 2.5 Gbps Max Internet Speeds 2 Year Warranty - (No Built-in Wifi)
- Introducing Amazon eero 7 dual-band mesh Wi-Fi 7 router (newest model) - Supports internet plans up to 2.5 Gbps, Coverage up to 6,000 sq. ft., 3-pack

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-14*