---
product_id: 267549500
title: "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: "$414.15"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/267549500-surfboard-s33-docsis-3-1-multi-gig-cable-modem-2
store_origin: US
region: United States of America
---

# 2.5 Gbps Multi-Gig Speed Compact, Space-Saving Design 2 Ethernet Ports (2.5Gbps + 1Gbps) 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:** $414.15
**Availability:** ✅ In Stock

## Summary

> 🚀 Surf the future of internet speed with ARRIS S33 — don’t get left buffering!

## Quick Answers

- **What is this?** 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?** $414.15 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/267549500-surfboard-s33-docsis-3-1-multi-gig-cable-modem-2)

## 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

- • **Cut the Rental Fees:** Own your modem outright and say goodbye to monthly rental charges—smart saving for savvy pros.
- • **Plug & Play Simplicity:** Effortless setup with clear LED indicators—just connect, activate, and pair with your Wi-Fi router.
- • **Blazing Multi-Gig Speeds:** DOCSIS 3.1 tech powers internet plans up to 2.5 Gbps for ultra-fast streaming, gaming, and downloads.
- • **Dual Ethernet Powerhouse:** 2.5 Gbps port for high-speed routers plus a 1 Gbps port for extra wired devices or backup connections.
- • **Certified Provider Compatibility:** Works seamlessly with major US ISPs like Xfinity, Cox, and Spectrum—future-proof your home network.

## Overview

The ARRIS SURFboard S33 is a DOCSIS 3.1 cable modem designed for cable internet plans up to 2.5 Gbps. Featuring a 2.5 Gbps and a 1 Gbps Ethernet port, it delivers ultra-fast wired connectivity. Compact and easy to set up, it’s compatible with major US cable providers like Xfinity, Cox, and Spectrum. This modem requires a separate Wi-Fi router for wireless coverage and helps users save on rental fees by owning their device.

## Description

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

## 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 |
|---------------|-------|
| Brand | ARRIS |
| Series | S33 |
| Item model number | S33 |
| Item Weight | 14.4 ounces |
| Product Dimensions | 4.74 x 1.8 x 5.14 inches |
| Item Dimensions  LxWxH | 4.74 x 1.8 x 5.14 inches |
| Color | White |
| Manufacturer | Vantiva |
| ASIN | B08FMSC5WZ |
| Date First Available | October 4, 2020 |

## Product Details

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

## Images

![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)

## 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.

## 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 United States of America*
*Store origin: US*
*Last updated: 2026-01-30*