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Motorola MB8600 DOCSIS 3.1 Cable Modem 2020 Latest Updated Review

Motorola MB8600 DOCSIS 3.1 Cable Modem 2020 Latest Updated Review

Motorola MB8600 is a great choice for customers who want ultra-fast cable modem performance both today and for years to come.

MB8600 features low latency, for the fast response needed for many interactive games.

It includes 1 open Ethernet GigE LAN port. There are 3 additional Ethernet GigE LAN ports masked behind a label.

Current firmware supports bonding on 2 Ethernet ports, which is essential for delivering speeds over 1Gbps


MB8600 supports ultra fast DOCSIS 3.1, the only cable modem standard that can deliver Internet speeds of 1Gbps or higher, up to many gigabits per second.

Actual speeds depend on your cable modem service and the speed of your Ethernet LAN ports. MB8600 also has 32×8 support for the fastest possible speeds using the DOCSIS 3.0 standard.

Even if you don’t have DOCSIS 3.1 service now, you can benefit from the 32×8 DOCSIS 3.0 capability that’s also built into this cable modem.

Key Features

  • The MB8600 supports ultra-fast DOCSIS 3.1 – the only cable modem standard that can deliver speeds over 1 Gigabit per second (Gbps). It also has 32×8 support for the fastest possible speeds using the older DOCSIS 3.0 standard.
  • The MB8600 supports Ethernet Port bonding which is essential for delivering 1 Gbps and higher speeds, and comes support for the fastest available cable modem services.
  • Active Queue Management (AQM) significantly reduces Internet latency. AQM results in faster page loads for all Web traffic and greatly enhances interactive applications like online gaming and video conferencing.
  • The MB8600 includes Broadcom Full-Band Capture digital tuner to enhance speed and save energy.
  • The unit uses multi-processor technology with ARM based application processor for high performance.

Additional Features

Additional Features

The MB8600 is certified for Comcast XFINITY, Comcast Business, and Cox Communications, and typically saves over $120 per year in cable modem rental fees**.

Using Quick Start, you can set it up quickly and easily.

The MB8600 has five status-reporting LEDs on the front panel and two LEDs for each Ethernet port on the back panel, indicating its status – no more guesswork.

Signal Quality

You might think that the only people who can benefit from this modem are those that live in an urban area, where extremely fast speeds are available. But there is an exception.

Thanks to Full Band Capture technology, this modem will be useful in rural areas, or locations with poor signal quality.

A modem that caps out at around 500 Mbps might only have access to the first 16 channels. Since only ultra-high speed modems use the upper channels, these are emptier, and typically have a cleaner signal.



If you are familiar with the Motorola Arris cable modem line, know that Zoom’s Motorola modems are completely.

Different looking devices and it seems that the manufacturer has also distanced itself from the previous Zoom cable modems by adopting an entirely new design.

So, the MB8600 features a robust elliptic-cylindrical plastic case, with soft rounded corners (obviously) and,

There is a narrower top and a thicker bottom section (that is really a built-in stand) that are covered by a glossy black finish.


Inside the case, Zoom has equipped the Motorola MB8600 with a Broadcom BCM3390ZRKFSBG chipset  512 MB of RAM

The MB8600 is able to handle up to 32 SCQAM downstream download channels and 8 upstream bonded channels using DOCSIS 3.0

So, while both Arris and Netgear got caught up in the latency bug mess, Zoom kept its record reasonably clean.

Compatibility and Performance

Similarly to the Arris SB8200 and Netgear CM1000, Motorola MB8600 suffers from a lack of support from the large majority

This will slowly change in the next months when DOCSIS 3.1 becomes widespread and speeds at and beyond 1Gbps become more common.

At the moment, the MB8600 is compatible with Comcast XFinity, Cox and Grande Communications,

while W.O.W. and Charter should add it to their list of approved modems in a short period of time

Whats More

The cable modem is designed to work with U.S. cable Internet providers including Comcast XFINITY, Comcast Business, and Cox Communications.

It supports ultra-fast Motorola MB8600 DOCSIS and also falls back to the fastest DOCSIS 3.0 32×8 speeds, great for smooth video streaming, fast downloads, high-speed gaming, web browsing, and more.

For maximum flexibility, it’s also backward compatible with DOCSIS 2.0 and 1.1 services.

It includes Motorola MB8600 DOCSIS Active Queue Management (AQM), which accelerates page loads, gaming, and video conferencing.



The setup process of the Motorola MB8600 is similar to any other cable modem out there

You either activate the device manually or by calling your ISP.

To do it manually, plug a cable from the modem to a computer and open a web browser

This will automatically launch the activation wizard  From here on, you need to follow the on-screen instructions