Comcast XFINITY Modems, Routers, and Gateways

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XFINITY Modems 2021

Need help finding a new XFINITY modem? We have the most up-to-date information on Comcast XFINITY modems. There are over 70 cable modems approved by Comcast. However, the info they provide is not the best. Over 20 of the modems are not worth buying due to faulty parts, poor feedback, and so forth, all info Comcast chooses to ignore.

Easily find the best one here for your XFINITY Internet tier. We give you the best options for each different type. You can also view the lists by type including ones without WiFi, modem/router combos (gateways), voice, and DOCSIS 3.1.


What Modem Is Best For XFINITY?

The XFINITY modem that you need for your individual XFINITY service depends on three factors. First, your Internet speed. If you are unsure what your subscribed speed is, you will find it on your bill. Modems are all built to handle many different speeds, so this is very helpful. Secondly, the right modem for you depends on your other XFINITY services. Do you have home phone service with Comcast? If so, then you will need an eMTA unit, a.k.a. voice modem built exclusively for XFINITY voice and internet.

Last but not least, would you prefer an XFINITY modem with built-in WiFi, or would you like a modem and separate router? How big is your home? With that said, you can see that not everyone can use the same XFINITY modem. Therefore, you should not rush into buying just any modem because it may not work for your services. There are many factors that decide for you, which modem you need.


XFINITY Modems List – April 2021

Modems highlighted in red were built with the bad Puma 6 chipset and are here for reference only. Modems in yellow are at or near end-of-life. This means support has or will run out soon. However, they are cheaper than other modems, buy at your own discretion.

Brand MPN Top XFINITY Speed DOCSIS Version WIFI-5 WIFI-6 LAN Ports Voice Ports USB Ports
ARRIS SURFboard S33 2000 3.1 x x x x x
ARRIS SURFboard T25 2000 3.1 x x x 2 x
ARRIS SURFboard SBG8300 1000 3.1 AC2350 Wave 2 x 4 x x
ARRIS SURFboard SB8200 2000 3.1 x x 2 For Port Bonding Only x x
ARRIS SURFboard SBV3202 600 3.0 x x x 2 x
ARRIS SURFboard SB6183 300 3.0 x x x x x
ARRIS SURFboard SBG7600AC2 600 3.0 AC2350 Wave 2 x 4 x 1
ARRIS SURFboard SBG7580AC 600 3.0 AC1750 x 4 x 1
ARRIS SURFboard SBG7400AC2 400 3.0 AC2350 x 4 x 1
ARRIS SURFboard SB6190 600 3.0 x x x x x
ARRIS SURFboard SVG2482AC 400 3.0 AC1750 x 4 2 2
ARRIS SURFboard SBV2402 400 3.0 x x x 2 x
ARRIS SURFboard SBG10 300 3.0 AC1600 x 2 x x
ARRIS SURFboard SBG6950AC2 300 3.0 AC1900 x 4 x 1
ARRIS SURFboard SBG6900AC 300 3.0 AC1900 x 4 x 2
ARRIS SURFboard TM822R 100 3.0 x x x 2 x
ARRIS SURFboard TM822G 100 3.0 x x x 1 x
ARRIS SURFboard SBG6700AC 100 3.0 AC1600 x 2 x x
ARRIS SURFboard SBG6782AC 100 3.0 AC1750 x 4 x x
ASUS CMAX6000 2000 3.1 Compatible AX6000 4 x x
ASUS CM32 600 3.0 AC2600 x 4 x 1
ASUS CM-16 300 3.0 x x x x x
Cisco DPC3008 100 3.0 x x x x x
D-Link DCM301 100 3.0 x x x x x
Humax HGD310 6000 3.1 x x 2 – Port Bonding x x
Linksys CM3024 400 3.0 x x x x x
Linksys CG7500 400 3.0 AC1900 x 4 x x
Linksys CG6350 400 3.0 x x x x x
Linksys CM3016 300 3.0 x x x x x
Motorola MB8611 2500 3.1 x x x x x
Motorola MG8702 1000 3.1 AC3200 x 4 x 1
Motorola MB8600 6000 3.1 x x 4 – Port Bonding x x
Motorola MG7540 300 3.0 AC1600 x 4 x x
Motorola MB7420 300 3.0 x x x x x
Motorola MT7711 400 3.0 AC1900 x 4 2 x
Motorola MG7700 400 3.0 AC1900 x 4 x x
Motorola MB7621 400 3.0 x x x x x
Motorola MG7550 300 3.0 AC1900 x 4 x x
Motorola MB7220 100 3.0 x x x x x
NETGEAR CM600 600 3.0 x x x x x
NETGEAR CM700 600 3.0 x x x x x
NETGEAR C6900 400 3.0 AC1900 x 4 x x
NETGEAR C7000 400 3.0 AC1900 x 4 x 1
NETGEAR C7100V 400 3.0 AC1900 x 4 2 2
NETGEAR C7500 400 3.0 AC3200 x 4 x 2
NETGEAR C6230 300 3.0 AC1200 x 2 x 1
NETGEAR CM500V 300 3.0 x x x 2 x
NETGEAR C6250 300 3.0 AC1600 x 2 x x
NETGEAR CM500 300 3.0 x x x x x
NETGEAR C6300 v1-v2 300 3.0 x x x x x
NETGEAR CM400 100 3.0 x x x x x
NETGEAR C6220 100 3.0 AC1200 x 2 x 1
NETGEAR Nighthawk CM2050V 2500 3.1 x x x 2 x
NETGEAR Nighthawk CM2000 2500 3.1 x x x x x
NETGEAR Nighthawk CAX80 1000 3.1 Compatible AX6000 4 x 1
NETGEAR Nighthawk CM1200 2000 3.1 x x 4 – Port Bonding x x
NETGEAR Nighthawk CM1150V 2000 3.1 x x 4 – Port Bonding 2 x
NETGEAR Nighthawk CM1100 2000 3.1 x x 2 – Port Bonding x x
NETGEAR Nighthawk CM1000 v1-v2 1000 3.1 x x 1 x x
NETGEAR Nighthawk C7800 2000 3.1 AC3200 x 4 x 1
NETGEAR Orbi CBR750 1000 3.1 Compatible AX4200 4 x x
NETGEAR Orbi CAX30 2500 3.1 Compatible AX2700 4 x 1
NETGEAR Orbi CBR40 600 3.0 AC2200 x 4 x x
SMC D3CM1604 300 3.0 x x x x x
TP-Link CR1900 400 3.0 AC1900 x 4 x 2
TP-Link TC-7650 400 3.0 x x x x x
TP-Link CR700 300 3.0 AC1750 x 4 x 2
TP-Link TC7620 300 3.0 x x x x x
TP-Link CR500 300 3.0 AC1200 x 4 x x
TP-Link TC-7610 100 3.0 x x x x x

Xfinity Internet Plans and Requirements

  • Performance Starter (25 Mbps) & Performance (100 Mbps)
    • Require a modem with at least 8×4 channel bonding
  • Blast! (200 Mbps) & Extreme (300 Mbps)
    • The compatible modem must be at least a 16×4 modem
  • Extreme Pro (600 Mbps)
    • Must use at least a 24×8 bonded modem
  • XFINITY Gig & Gigabit Pro
    • Must use a DOCSIS 3.1 modem

XFINITY WiFi Router, a.k.a. Gateways

XFINITY gateways, most often referred to as a modem router combo, have a built-in router. Therefore, you will not need a separate router. The advantages of a gateway are that they are easier to set up, take up less space, and not so many messy wires.


XFINITY DOCSIS 3.1 Gigabit Modems

All of these modems are DOCSIS 3.1. Some have WiFi capabilities and others do not. The same goes for voice capabilities. All current 3.1 modems are backward compatible with 3.0.

NETGEAR – Understanding DOCSIS 3.1 & WiFi-6

Comcast Voice Modems

Voice modems, a.k.a eMTA, are needed if you have XFINITY home phone service, not mobile service. If you have Double Play or Triple Play, chances are you are paying for this service, especially if you have the Triple Play package.


Comcast is the largest cable Internet provider in the USA. The Comcast Corp. has service available in 40 States.

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For XFINITY Service – Call 1-800-XFINITY or try The XFINITY Assistant