10 Best Comcast Compatible Modems -Comcast Approved Modems

10 Best Comcast Compatible Modems

Best Comcast Compatible Modems

Buying a cable modem is a good idea. Any model on this shortlist would definitely pay for itself over a period of two or three years.
The problem is that the cable modem market can be confusing to determine which product you should pick. I’ve strongly selected ten Comcast modems of different models.They are similar in many ways but have some important differences.
So, if you are shopping for best Comcast modem to experience better connection without any stress in setting up,and ready to eliminate yearly fees for cable modem rental, you are in the right place.

When it comes to cable modem you need to smart about which one to buy. There are many great and best Comcast cable modems available in the market to experience excellent connection.

We have created a list of best modems compatible with Comcast 2017. After researching and interview people who have had success about the best Comcast internet modems. Here is the shortlist of best 10 Comcast approved cable modems which you can check and choose any one that suite your need.

Our Considerations

Best Comcast Compatible Modems


All Comcast cable modems should conform to certain level but that doesn’t mean that they all deliver the same speeds in downloading and uploading. It is important to look at each modem requirements and their effectiveness.

Features & Compatibility

Although Comcast cable modems has a great features that focus on providing CableLabs-certified DOCSIS 3.0 technology that delivers speeds 8 times better than DOCSIS 2.0. As for compatibility, most Comcast approved cable modems are certified for Xfinity , Spectrum, Cox, Cablevision and all US internet provider.

Modem Set Up & Use

Every company claims that their cable modem is very easy to set up and use. After checking most verified customer review on various eCommerce, mostly Amazon, most of these modems are easy to set up and use.


None of these Comcast modems are expensive,you can avoid the price of your choice.

The 10 Best Comcast Compatible Modems

1.NETGEAR CM400 (8×4) DOCSIS 3.0 Cable Modem

NETGEAR CM400 Modem eliminate monthly cable rental fees .It is a great cable modem with 1 Gigabit Ethernet port. The DOCSIS 3.0 unleashes 8 times faster download speeds than all DOCSIS 2.0.

NETGEAR CM400 is Ideal for streaming HD videos, faster downloads, and high-speed online gaming.Very compatible with Xfinity from Comcast, Spectrum , Cox, CableONE etc.

Note: It doesn’t compatible with bundled voice services and not a WiFi device. You might need a separate WiFi Router.

The CM400 Modem provides a connection to high-speed cable with speeds up to 343Mbps.The modem is CableLabs certified and features 8 downstream channels and 4 upstream channels. It provide efficient and reliable Internet access. It work with all major US cable Internet providers.

NETGEAR CM400 is a fast self-activation for XFINITY customers. You can get connected without a service call.The Modem is among best Comcast compatible modems.

2.Motorola 8×4 Cable Modem Gateway + Wi-Fi N450 Router

The Motorola Cable Modem is a new modern started in 2016.The MG7315 is an 8×4 343 Mbps DOCSIS 3.0 cable modem with a built-in N450 wireless router and Wi-Fi Power Boost.

The Motorola MG7315 is certified by CableLabs and Comcast XFINITY. Also with Charter Spectrum, Time Warner Cable,Cox and more.

It eliminates modem rental charges, so you can save $120 or more per year. Model MG7315 is a great modem for almost any cable user.
The 8 X 4 modem performance means that it up to 8 cable data channels transfers data from the Internet, 8x faster than DOCSIS 2.0; and up to 4 channels transfer data to the Internet.


Motorola Power Boost technology amplifies the wireless signal to the legal limit for speed and range to be increased. Not only that, the built-in N450 router provides the range, wireless speeds, and networking support needed for all n/ac/g/b Wi-Fi devices including computer, smartphones, tablets, and HDTVs.

Motorola MG7315 router features include parental controls, an advanced firewall and a browser-based configuration manager.
With this router, you can protect your local network’s information while still allow guest access to Internet services. The Setup is super-fast with Quick Start guide. Best of all,MG7315 offers the value, performance that continue to make Motorola the leading brand of cable modem.

3.NETGEAR AC1600 (16×4) WiFi Modem Router (C6250)

NETGEAR AC1600 Cable Modem Router is a two-in-One DOCSIS 3.0 Modem + WiFi Router. It delivers up to 680Mbps speed. The router is certified to work with most Cable Internet Providers such as XFINITY from Comcast, Time Warner Cable, Cox, Cablevision etc.

NOTE: The modem router (C6250) is not compatible with Cable Bundled Voice Services.
It has 16×4 channel bonding enables up to 680 Mbps download speeds


Speed and Range:

• NETGEAR AC1600 has a fastest WiFi-Up to 300+1300Mbps.Built with DOCSIS 3.0 which up to 16x faster cable speeds.

  •  It is a fastest Internet speeds during peak hours.
  •  Built with next generation WiFi at Gigabit speeds.
  • The modem is Ideal for HD gaming and video streaming.
  •  The WiFi coverage throughout your home.

Ease of Use:

Easy setup for iPad, smartphones, tablet and computers. Easy push button WiFi connections (WPS).

User can Power On/Off wifi for convenient power savings. It has a guest Network Access to easily separate and secure access for guests. After all, it is among top rated Comcast Compatible Modems.

4.TP-Link DOCSIS 3.0 (8×4) Cable Modem (TC-7610-E)

The TP-Link is a cable Modem certified with Comcast Xfinity 8×4 DOCSIS 3.0 Cable Modem and Amazon certified Frustration Free Packaging (TC-7610-E).

It is a great idea to owning your modem which saves you the rental fees charged by most Internet Service Providers. It built with DOCSIS 3.0 for Faster, Future-Proof Internet connection.

The TC-7610 is a CableLabs-certified DOCSIS 3.0 technology that delivers speeds 8 times faster than DOCSIS 2.0. The TP-Link modem also features innovative 8×4 channel bonding for improving speed throughput.

You can easily Stream HD video and Game without slowing down. The TC-7610 lets you enjoy lag-free online gaming, HD streaming with 343Mbps download and 143 Mbps upload speeds. It built with lightning-fast Gigabit Ethernet port.

Quick and Easy Setup

To set it up, you only need to connect the coaxial cable to the modem. Then connect your computer to the modem using an Ethernet cable. Call your service provider self-activation process to activate the modem.

TP-Link Cable Modem is currently compatible with the all ISP’s like Spectrum (Including Charter, Time Warer Cable, and Bright House Networks), Comcast/Xfinity and more.

Lifetime Service and Warranty

When you buy TP-Link Cable Modem, their team has 24/7 for toll-free technical support including setup.No matter where and when you purchased their product. Also, you are cover with 2-year warranty gives you worry-free service.

5. ARRIS SURFboard N300 Modem Router (SBG6400)

ARRIS SURFboard N300 is anther Comcast compatible modem. It is an outstanding modem which can be set up and running in just a few minutes.

The ARRIS modem can utilize up to 8 channels of downstream for a theoretical max speed of 343 Mbps.Most Comcast modem like Motorola SB6121 and other modems can only utilize 4 channels.You can increase your download speeds at 172 Mbps with ARRIS SURFboard N300.


The ARRIS / Motorola SBG6400 cable modem plus Wi-Fi Router is the new and latest product available from ARRIS. The ARRIS SBG6400 is an all-in-one DOCSIS 3.0 cable modem, 802.11N Wi-Fi & 2-Port Gigabit Ethernet Router.

This modem will equip your home network with the advanced modem & router available today to boost your Internet experience.

6.ARRIS SURFboard SB6190 – Best Comcast Compatible Modems

The cable modem was built upon the success of the SB6121 and SB6141.The ARRIS SB6190 enhances your personal media experience, at lightning-fast broadband speed.

The modem harnesses the power of DOCSIS 3.0 technology to bond up to 16 downstream channels and 4 upstream channels. This provide you advanced multimedia services with data rates up to 686 Mbps download and 131 Mbps upload base on your Cable Internet provider service.


The router makes gaming, streaming HD Video, high-quality voice and video conferencing, downloading, shopping, and peer-to-peer networking applications far more realistic, faster, and more efficient than ever before.
It came with 2 year warranty.

Most of Comcast’s DOCSIS 3.0 cable modems have only 4 or 8 bonded channels, while it support bonding 16 downstream channels. The ARRIS SB6190 modem has 16 channels available. It compatible with major U.S. Cable Providers.
The amazing thing about this router is that it supports IPv4 and IPv6 – the new and latest Internet standard. The DOCSIS 3.0 Modem has 16 download and 4 upload channels.It simply among the best if not the Comcast compatible modems

7.Motorola 16×4 Cable Modem Gateway, Model MG7550

The MG7550 is upgraded power handling to protect against lightning and power surge. It built with robust heat sinks to handle a broad temperature range. The MG7550 is a bit better than the ARRIS SB6141 modem.

The Motorola 16×4 Modem provides speeds up to 686 Mbps, 16x faster than DOCSIS 2.0.It is a full-Band capture digital tuner which ensures a faster, more reliable Internet. Motorola modem has built-in wireless router.

Other Motorola modem with built-in wireless router are: MG7310, MG7540 and MG7315.

The setup is fast and easy. The Company has experienced USA-based customer support specialists to help if you need them.It has attractive and compact design reduces shelf space. The model MG7550 improves cooling and extends product life while looking great in any office or home.


The product has 2 year warranty plus rugged lightning and power surge circuits to protect your investment, so no risk.

8.ARRIS SURFboard AC1900 WiFi Cable Modem Router

The ARRIS SBG6900AC modem & Wi-Fi Router is the latest ARRIS product. It is all-in-one and best-in-class device equipped with a DOCSIS 3.0. The ARRIS AC1900 has 16 download and 4 upload channels cable of speeds up to 686Mbps.

It built with 802.11AC 1900 Mbps Wi-Fi dual band Router and 4-Port Gigabit Ethernet ports. If you want to equip your home network with the best and most advanced modem & router.The product give you all what you need to enhance your Internet experience.

It compatible with all major US cable service such as Comcast Xfinity, Charter, Cox, Time Warner Cable, Cablevision and more.


NOTE: ARRIS SBG6900AC NOT compatible with: AT&T, CenturyLink or Verizon.

The SBG6900AC Modem Ideal for streaming HD Video and gaming on multiple devices at a time. It support latest Internet standard- both IPv4 and IPv6. AC1900 meet our best Comcast compatible modems due to its outstanding features.

9. NETGEAR CM700 (32×8) Cable Modem

NETGEAR CM700 (32×8) cable Modem is one of the best modem on the market. The DOCSIS 3.0 unleashes 8x faster download speeds than DOCSIS 2.0. The modem is up to 1.4Gbps download and upload speed.

You will need separate router for WiFi. It compatible with Vista®, XP, 2000, Mac OS®, Microsoft® Windows® 7, 8, and other operating systems running a TCP/IP network.


CM700 modem is certified for XFINITY by Comcast, Charter, Time Warner Cable etc.

10. Zoom 8×4 Cable Modem- Model 5345

The Zoom Model 5345 is a 343 Mbps cable modem .The Zoom is certified cable modem programs by Time Warner Cable, Comcast XFINITY, and some other leading cable service providers. The product is Charter Spectrum approved.

When used with a router, the Internet service can be shared with multiple devices. This modem is 8×4, which supports 8 channels for downloads, and 4 channels for uploads. The 8 channels for data downloads make Zoom 5345 modem up to 2x as fast as competing modems that support only four channels.

The Zoom 5345 is a full-Band Capture Digital Tuner that lets service providers deliver more reliable and faster Internet.It certified by CableLabs and support the latest DOCSIS 3.0 standard, DOCSIS 2.0 and 1.1 for use with older cable modem systems.

It supports both IPv6 and IPv4 for flexible and powerful network. The 5345 is a better choice for almost any cable modem user. It has been tested and certified by CableLabs to work with almost all U.S. cable services.
The Zoom 5345 modem is strongly covered by 2 year warranty with excellence technical support by Zoom Telephonics.

Best of the Best Comcast Compatible Modems

Over this review, it is a little bit difficult to separate these modems. After all, the five best Comcast modems share some amazing features and similarities. To determining which product is the best Comcast modem is actually quite easy. In the end, our pick is Motorola 16×4 High-Speed Cable modem.

This could have gone to the ARRIS SURFboard SB6190 Cable Modem because of its high satisfaction ratings. It could also have gone to the NETGEAR AC1600WiFi cable modem router. The specs on these two are very similar, it’s not easy to differentiate. The Zoom Model 5345offers 343Mbps, a full-Band Capture Digital Tuner that lets service providers deliver faster and reliable Internet. All four modems have a Gigabit Ethernet port.

Why Motorola 16×4 Gateway is the best among Comcast compatible modems?

This is simply because other competitors have some minor flaws, and the Motorola 16×4 High-Speed Cable modem provides some distinct advantages and it has built-in wireless router. The ARRIS SURFboard SB6190 supports IPv4 and IPv6 which give us second taught.

When it comes to overall performance, the Motorola Gateway simple the best followed by ARRIS SURFboard SB6190.
All of the Camcast cable modems on our shortlist are outstanding products. In the end, it’s the ARRIS/Motorola SurfBoard.

The ARRIS/Motorola has all the features and requirements you need,best cable modem. It meets the latest DOCSIS 3.0 and both IPv4 and IPv6 standards, mean it can handle the best internet speeds available.

It’s also compatible with DOCSIS 1.0, 2.0.You can easily upgrade it to get fastest available service. The modem’s Gigabit Ethernet port allows you to link many devices without experiencing connection problem.

Wrapping Up

Most of our finalists offer similar specifications, but what sets the ARRIS/Motorola SurfBoard apart?

Answer is Download speed.

It enhances your personal media experience and lightning-fast broadband speed. This model is on the high end of the spectrum. Both downstream and upstream are better than most at 131 Mbps. User get up to 686 Mbps double the most rival.

The SurfBoard SB6190 will cost you around $79 as at the time of writing this review, compare to renting a cable modem for $10 a month. This reduce your expenses and get your money back very quickly. Choosing the ARRIS/Motorola SurfBoard modem is a deal.

Our Top 5 Picks For Best Comcast Compatible Modems

  1. ARRIS SURFboard SB6183
  2. Motorola 16×4 Cable Modem Gateway, Model MG7550.
  3. NETGEAR AC1600 WiFi cable modem router
  4. Zoom 8×4 Cable Modem- Model 5345
  5. NETGEAR CM700 (32×8) Cable Modem

Note that the list of 10 Comcast compatible modems are best among modems.Because they are not listed in our top 5 modem doesn’t mean they are not the best.At time,price may determine what best for you.The list of Comcast modems were careful selected to meet your need.