---
product_id: 3103494
title: "Arris CM820A Cable Modem DOCSIS 3.0 (Latest Version - 1 Step Activation)"
brand: "arris"
price: "329.14 DT"
currency: TND
in_stock: true
reviews_count: 9
category: "Arris"
url: https://www.desertcart.tn/products/3103494-arris-cm820a-cable-modem-docsis-3-0-latest-version-1
store_origin: TN
region: Tunisia
---

# 8x4 channel bonding for blazing speeds Dual 96MHz RF tuners for max downstream up to 1GHz Built-in MoCA immunity filter for stable connection Arris CM820A Cable Modem DOCSIS 3.0 (Latest Version - 1 Step Activation)

**Brand:** arris
**Price:** 329.14 DT
**Availability:** ✅ In Stock

## Summary

> 🚀 Unlock lightning-fast, reliable internet — because buffering is so last decade!

## Quick Answers

- **What is this?** Arris CM820A Cable Modem DOCSIS 3.0 (Latest Version - 1 Step Activation) by arris
- **How much does it cost?** 329.14 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/3103494-arris-cm820a-cable-modem-docsis-3-0-latest-version-1)

## 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

- • **Save on Rental Fees:** Own your modem and cut monthly rental costs, paying for itself in just a few months.
- • **Plug & Play Activation:** One-step activation means zero hassle—get online faster and stay connected effortlessly.
- • **Dual 96MHz Wide RF Tuners:** Capture more downstream channels up to 1GHz for superior network reliability and speed consistency.
- • **Blazing 8x4 Channel Bonding:** Experience ultra-fast data throughput up to 300 Mbps, perfect for demanding home and office setups.
- • **MoCA Immunity Filter Built-In:** Enjoy interference-free streaming and gaming with advanced MoCA filter technology that blocks signal noise.

## Overview

The Arris CM820A DOCSIS 3.0 cable modem delivers robust 8x4 channel bonding with dual 96MHz RF tuners and a built-in MoCA immunity filter, enabling ultra-high-speed internet access up to 300 Mbps. Designed for both home and small business users, it offers easy one-step activation and reliable performance that outpaces ISP rental equipment, helping you save money while enjoying seamless connectivity.

## Description

The Touchstone DOCSIS 3.0 8x4 Cable Modem CM820A delivers ultra-high speed data access to cable service subscribers homes and businesses. Designed to support the services desired most by advanced users, the CM820A enables the home or small business user to address productivity needs with the speed and performance found only in the 8x4 bonded channel cable environment along with industry-leading ARRIS reliability. With the CM820A, cable operators can offer data services at speeds greater than 300Mbps to their subscribers to compete against VDSL and fiber to the home threats, as well as provide a platform to deliver competitive high capacity commercial services to businesses.

Review: Works Great; I'm not a Tech-Savvy Person - I bought this modem back in March 2020. It's now April 2022. We use a local cable internet provider (Service Electric). Our previous cable modem pooped out in March 2020. It probably caught COVID. Anyway, Service Electric told me I could buy a new modem with DOCSIS 3.0, and they recommended Arris brand. So, I bought this one. It arrived. I connected it. It worked. It still works. I don't know anything about internet speeds, up and down channeling, ping speed, etc., and I don't care. We are a homeschool family and use internet for things like email, online lessons, streaming videos, YouTube, podcasts, audiobooks, and paying bills. Our four kids don't have any screen devices. My husband and I don't let them touch our phones. We don't watch TV because we're old-school and do things like go on walks, read books out loud, eat meals together, play games, do chores, and do projects. We're also cheap, so we have a basic 25 mbps plan, or something low like that. Internet: When I type a web address into the address bar, the webpage comes right up. That's all I need. This modem never asks anything of me. When we lose power and the power returns, this modem turns right back on. This modem works constantly behind the scenes, never complaining, never asking for anything. It just keeps giving and giving, like Shel Silverstein's Giving Tree. Therefore, this modem gets 5 stars.
Review: Great performance on Comcast (Blast tier) - It's not beautiful by any means but the performance more than makes up for it. Using it with Comcast Cable in March of 2016. The 802A is actually the retail model of this device and is on Comcast's approved equipment list while this 802 was meant to be distributed by cable providers and is not on the list. However, it will work and was easy to set up. When you call Comcast to activate the equipment just tell them it is the 802A and give them the seriel number on the device and Comcast will be none the wiser (it shouldn't matter anyway, but better to play it safe). Took about 10 minutes on the phone to get it activated. Provides stable performance and is better than the equipment Comcast provides these days. Buying your own modem will save you $10 a month on the equipment rental, paying for itself in just a few months. I have Blast speed from Comcast and actually get better than advertised speeds with this device (90 Mbps down and 15 Mbps up). Make sure you have your own wireless router if you want to set up a wireless home network, as this device is just a simple cable modem and not a cable modem/wireless gateway like the equipment you likely have from Comcast right now.

## Features

- 8x4 bonded downstream/upstream channel for superior throughput
- Built in MoCA® immunity filter
- Two independent 96MHz wide RF tuners to receive downstream channels up to 1GHz
- Meet or exceed industry radiated immunity and surge requirements
- Please check with your Internet Service Provider for compatibility in your home or office
- Flexible NxM downstream/upstream channel bonding for superior throughput

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B008GG78FU |
| Best Sellers Rank | #14,039 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #67 in Computer Networking Modems |
| Brand | ARRIS |
| Color | Black |
| Compatible Devices | Personal Computer |
| Connectivity Technology | Wired |
| Customer Reviews | 4.1 out of 5 stars 772 Reviews |
| Data Transfer Rate | 300 Megabits Per Second |
| Internet Service Provider | cox, optimum, spectrum, xfinity |
| Internet service provider | cox, optimum, spectrum, xfinity |
| Item Weight | 0.01 Ounces |
| Manufacturer | ARRIS |
| Maximum Downstream Data Transfer Rate | 300 Megabits Per Second |
| Maximum Upstream Data Transfer Rate | 300 Megabits Per Second |
| Mfr Part Number | FBA_P-10-20521 |
| Model Number | FBA_P-10-20521 |
| Modem Type | Cable |
| Number of Ethernet Ports | 2 |
| Number of Ports | 2 |
| UPC | 726947110717 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** ARRIS
- **Color:** Black
- **Compatible Devices:** Personal Computer
- **Connectivity Technology:** Wired
- **Internet service provider:** cox, optimum, spectrum, xfinity

## Images

![Arris CM820A Cable Modem DOCSIS 3.0 (Latest Version - 1 Step Activation) - Image 1](https://m.media-amazon.com/images/I/518+QY1-JbL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works Great; I'm not a Tech-Savvy Person
*by F***L on April 5, 2022*

I bought this modem back in March 2020. It's now April 2022. We use a local cable internet provider (Service Electric). Our previous cable modem pooped out in March 2020. It probably caught COVID. Anyway, Service Electric told me I could buy a new modem with DOCSIS 3.0, and they recommended Arris brand. So, I bought this one. It arrived. I connected it. It worked. It still works. I don't know anything about internet speeds, up and down channeling, ping speed, etc., and I don't care. We are a homeschool family and use internet for things like email, online lessons, streaming videos, YouTube, podcasts, audiobooks, and paying bills. Our four kids don't have any screen devices. My husband and I don't let them touch our phones. We don't watch TV because we're old-school and do things like go on walks, read books out loud, eat meals together, play games, do chores, and do projects. We're also cheap, so we have a basic 25 mbps plan, or something low like that. Internet: When I type a web address into the address bar, the webpage comes right up. That's all I need. This modem never asks anything of me. When we lose power and the power returns, this modem turns right back on. This modem works constantly behind the scenes, never complaining, never asking for anything. It just keeps giving and giving, like Shel Silverstein's Giving Tree. Therefore, this modem gets 5 stars.

### ⭐⭐⭐⭐⭐ Great performance on Comcast (Blast tier)
*by M***. on March 12, 2016*

It's not beautiful by any means but the performance more than makes up for it. Using it with Comcast Cable in March of 2016. The 802A is actually the retail model of this device and is on Comcast's approved equipment list while this 802 was meant to be distributed by cable providers and is not on the list. However, it will work and was easy to set up. When you call Comcast to activate the equipment just tell them it is the 802A and give them the seriel number on the device and Comcast will be none the wiser (it shouldn't matter anyway, but better to play it safe). Took about 10 minutes on the phone to get it activated. Provides stable performance and is better than the equipment Comcast provides these days. Buying your own modem will save you $10 a month on the equipment rental, paying for itself in just a few months. I have Blast speed from Comcast and actually get better than advertised speeds with this device (90 Mbps down and 15 Mbps up). Make sure you have your own wireless router if you want to set up a wireless home network, as this device is just a simple cable modem and not a cable modem/wireless gateway like the equipment you likely have from Comcast right now.

### ⭐⭐⭐⭐ This Modem Is Great! Awesome Deal
*by A***X on July 4, 2013*

I have used this product for about Two weeks Already it is doing great and going fast. I did not give it five stars because this Modem WAS NOT NEW. It said "New" but it wasn't. Someone had already either set this thing up already or something. So when it got my house We had a bit of a struggle trying to get this thing to get on but it Was Eventually done! Wow The shipping was Very fast It was only like 2 days when it came and I did not use "Amazon Free Two day Shipping". It was working Fine now And I am enjoying my Internet Speeds!

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-07-03*