Comcast (Xfinity) Business Approved DOCSIS 3.0 and 3.1 Cable Modems

Modem list updated November 2018. Prices updated every hour.

Below are all the modems on the Comcast Business Internet Approved Cable Modem List which can be bought at Amazon, Walmart or Best Buy. We've gone through all of them to find the ones that can be purchased at major retailers.

If you're paying $10 a month to rent a modem from Comcast, that's $120 a year or $600 over 5 years. You can buy a new one that will pay for itself in less than one year. Its easy to install. Just hookup modem, open web browser on attached computer and follow the on-screen instructions.


DOCSIS 3.0 and DOCSIS 3.1 Cable Modems

Cable Modem Buying Tips and FAQ's

All of these modems below will work on all speed tiers. However, in order to maximize your internet speed, customers with up to 100 Mbps plans should buy a modem with at least 8 downstream channels. For up to 250 Mbps plans, buy a modem with at least 16 downstream channels. For Gigabit service (1000 Mpbs), buy a DOCSIS 3.1 modem below, with 32 downstream channels.

Comcast / Xfinity Residential customers: See our Comcast Residential Approved Modems page for more options.

Comcast / Xfinity Voice Customers: The modems listed immediately below will not work if you currently have a Comcast/Xfinity Telephone/Data modem. These are data only.

All of these modems are high quality and have pretty much the same features, except for number of downstream channels and those with routers built in. So don't worry too much about deciding which one to buy. Price should be a main factor in your buying decision. Buy one now and start saving those rental fees!

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See all Comcast / Xfinity Business approved modems and compare prices and features in a searchable table: All Comcast / Xfinity Approved Modems for Business: Price and Feature Comparison Table

Netgear CM500 DOCSIS 3.0 Cable Modem

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CM500
Netgear CM500 Specs

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The Netgear CM500 is currently one of the best selling modems and for a good reason. It has 16 downstream channels and 4 upstream, enough for most users.

  • Our rating:
  • Avg. rating at all sellers:

  • 4.2/5 (6,672 ratings counted at all sellers)

Sales Ranking*: 1

Motorola MG7540 DOCSIS 3.0 Cable Modem and AC-1600 WiFi Router

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MG7540
Motorola MG7540 Specs

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The Motorola MG7540 has a built-in AC-1600 router. Four gigabit ports with 16 downstream channels and 4 upstream. Look also at the MB7550, which has an AC-1900 router.

  • Our rating:
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  • 4.1/5 (964 ratings counted at all sellers)

Sales Ranking*: 6

ARRIS / Motorola SB6190 SURFBoard DOCSIS 3.0 Cable Modem

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SB6190
ARRIS SB6190 Specs

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The ARRIS / Motorola SB6190 has 32 downstream channels and 8 channels upstream. We don't recommend this modem as it has latency problems. See more about that here: Puma 6 Chipset. Take a look at these others: SB6183, TC-7650 and CM600

  • Our rating:
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  • 4.5/5 (2,903 ratings counted at all sellers)

Sales Ranking*: 4

Motorola MB8600 DOCSIS 3.1 Cable Modem

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MB8600
Motorola MB8600 Specs

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The Motorola MB8600 is a very popular DOCSIS 3.1 modem, compatible with DOCSIS 3.0 systems having 32 downstream channels and 8 upstream. It has one usable gigabit port, but has 3 others for WiFi channel bonding routers when they become available.

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  • 4.0/5 (718 ratings counted at all sellers)

Sales Ranking*: 7

ARRIS / Motorola SB6183 SURFBoard DOCSIS 3.0 Cable Modem

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SB6183
ARRIS SB6183 Specs

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The ARRIS / Motorola SB6183 is one of the latest versions in their Surfboard series. With 16 downstream channels and 4 upstream, it can handle all but the fastest internet plans. As the price of this modem has fallen, it's becoming one of the all-time popular modems.

  • Our rating:
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  • 4.5/5 (8,115 ratings counted at all sellers)

Sales Ranking*: 9

ARRIS SB8200 DOCSIS 3.1 Cable Modem

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SB8200
ARRIS SB8200 Specs

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The ARRIS SB6200 is a DOCSIS 3.1 modem for the fastest speeds available. Even if you don't have DOCSIS 3.1 service in your area yet, it will work on DOCSIS 3.0 plans and will really future proof if you get faster service. It has 2 Gigabit ports. For DOCSIS 3.0 plans, it has 32 downstream channels and 8 upstream.

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  • 4.0/5 (1,154 ratings counted at all sellers)

Sales Ranking*: 3

Netgear CM700 DOCSIS 3.0 Cable Modem

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CM700
Netgear CM700 Specs

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The Netgear CM700 has 32 downstream channels and 8 upstream. We don't recommend this modem as it has latency problems. See more about that here: Puma 6 Chipset. Take a look at these others: SB6183, TC-7650 and CM600

  • Our rating:
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  • 4.2/5 (2,630 ratings counted at all sellers)

Sales Ranking*: 16

Motorola MB7420 DOCSIS 3.0 Cable Modem

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MB7420
Motorola MB7420 Specs

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The Motorola MB7420 is another quality modem with 16 downstream channels and 4 upstream. A faster version of this model with 24 downstream channels is the MB7621.

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  • 4.2/5 (1,914 ratings counted at all sellers)

Sales Ranking*: 11

ARRIS / Motorola SB6141 SURFBoard DOCSIS 3.0 Cable Modem

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SB6141
ARRIS SB6141 Specs

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The ARRIS / Motorola SB6141 has 8 downstream channels and 4 upstream. The newer version of the SB6141 is the SB6183, which has twice the maximum download speed of the SB6141.

  • Our rating:
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  • 4.4/5 (27,661 ratings counted at all sellers)

Sales Ranking*: 5

SEE IT NOW AT:NEWUSED
Amazon $44.98
$29.70
Best Buy $49.99

TP-Link TC-7610 DOCSIS 3.0 Cable Modem

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TC-7610
TP-Link TC-7610 Specs

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The TP-Link TC-7610 is a fast modem with 8 downstream channels and 4 upstream. Another version of this is the TC-7620, with 16 downstream channels.

  • Our rating:
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  • 4.1/5 (1,305 ratings counted at all sellers)

Sales Ranking*: 12

SEE IT NOW AT:NEWUSED
Amazon $39.98
$17.49

TP-Link TC-7620 DOCSIS 3.0 Cable Modem

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TC-7620
TP-Link TC-7620 Specs

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The TP-Link TC-7620 is a fast modem with 16 downstream channels and 4 upstream. Another version of this is the TC-7650, with 24 downstream channels.

  • Our rating:
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  • 4.1/5 (591 ratings counted at all sellers)

Sales Ranking*: 20

SEE IT NOW AT:NEWUSED
Amazon $50.00
$36.50
Walmart $59.99

Netgear CM400 DOCSIS 3.0 Cable Modem

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CM400
Netgear CM400 Specs

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The Netgear CM400 has 8 downstream channels and 4 upstream. You might want to also check out the cm500,with 16 downstream channels and currently one of the best selling modems.

  • Our rating:
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  • 4.2/5 (2,499 ratings counted at all sellers)

Sales Ranking*: 26

TP-Link TC7650 DOCSIS 3.0 Cable Modem

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TC-7650
TP-Link TC-7650 Specs

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The TP-Link TC-7650 is a fast modem with 24 downstream channels and 8 upstream. Fast enough for all internet plans except gigabit ones.

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  • 3.9/5 (225 ratings counted at all sellers)

Sales Ranking*: 19

SEE IT NOW AT:NEWUSED
Amazon $79.99
N/A
Walmart $79.99

Netgear CM1000 DOCSIS 3.1 Cable Modem

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CM1000
Netgear CM1000 Specs

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The Netgear CM1000 is a DOCSIS 3.1 modem. Compatiable with DOCSIS 3.0 plans, having 32 downstream channels and 8 upstream. One gigabit port.

  • Our rating:
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  • 4.3/5 (3,022 ratings counted at all sellers)

Sales Ranking*: 13

SEE IT NOW AT:NEWUSED
Amazon $152.53
$134.23
Best Buy $159.99

Motorola MB7220 DOCSIS 3.0 Cable Modem

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MB7220
Motorola MB7220 Specs

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The Motorola MB7220 is another quality modem with 8 downstream channels and 4 upstream. A faster version of this model with 16 downstream channels is the MB7420.

  • Our rating:
  • Avg. rating at all sellers:

  • 4.5/5 (843 ratings counted at all sellers)

Sales Ranking*: 40

Netgear CM600 DOCSIS 3.0 Cable Modem

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CM600
Netgear CM600 Specs

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The Netgear CM600 is a DOCSIS 3.0 modem with 24 downstream channels and 8 upstream. It also has one gigabit port. A quality modem with enough speed for almost all internet plans.

  • Our rating:
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  • 4.1/5 (5,825 ratings counted at all sellers)

Sales Ranking*: 46

ARRIS / Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem

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SB6121
ARRIS SB6121 Specs

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The ARRIS / Motorola SB6121 has 4 downstream channels and 4 upstream. Even though it will work, most cable companies suggest a minimum of 8 downstream channels. Take a look at the SB6141, which doesn't cost much more, or the SB6183.

  • Our rating:
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  • 4.5/5 (8,722 ratings counted at all sellers)

Sales Ranking*: 48

SEE IT NOW AT:NEWUSED
Amazon $33.98
$14.88

Zoom Model 5370 DOCSIS 3.0 Cable Modem

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5370
Zoom 5370 Specs

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The Zoom 5370 DOCSIS 3.0 cable modem is a basic, quality modem with 16 downstream channels and 4 upstream.

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  • 4.4/5 (488 ratings counted at all sellers)

Sales Ranking*: 51

SEE IT NOW AT:NEWUSED
Amazon See Price
@Amazon
N/A

Zoom Model 5345 DOCSIS 3.0 Cable Modem

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5345
Zoom 5345 Specs

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The Zoom 5345 DOCSIS 3.0 cable modem is another basic, quality modem with 8 downstream channels and 4 upstream.

  • Our rating:
  • Avg. rating at all sellers:

  • 4.3/5 (349 ratings counted at all sellers)

Sales Ranking*: 50

SEE IT NOW AT:NEWUSED
Amazon See Price
@Amazon
$45.00
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See all Comcast / Xfinity Business approved modems and compare prices and features in a searchable table: All Comcast / Xfinity Approved Modems for Business: Price and Feature Comparison Table


*Sales Rank is based on analysis of retailer's sales.

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Price / Features Comparison

See every approved retail modem's price and features in an easily sorted and searchable table:

Comcast

Comcast Business

Cox

Spectrum

Cable ONE

Suddenlink

Time Warner/Road Runner/Bright House


Price / Features Comparison

See every approved retail modem's price and features in an easily sorted and searchable table:

Comcast

Comcast Business

Cox

Spectrum

Cable ONE

Suddenlink

Time Warner/Road Runner/Bright House


Other Helpful Links

Low Cost Cable Phone Service Alternative

Cable Modem Buying Tips and FAQ's