(Not a Comcast / Xfinity customer? Click your service provider tab above to find modems.)

Comcast (Xfinity) 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 Approved Cable Modem List which can be bought at Amazon, Walmart or Best Buy. There are over 70 different modems on that list and we've gone through all of them to find the ones that can be purchased at major retailers.

If you're paying $11 a month to rent a modem from Comcast, that's $132 a year or $660 over 5 years. You can buy a new one that will pay for itself in less than six months. Its easy to install. Just hookup modem, open web browser on attached computer and follow the on-screen instructions.

Comcast / Xfinity Triple Play or Voice customers: The modems listed immediately below will not work if you have Comcast/Xfinity Voice or Triple Play. To see modems that will work, read this: Comcast Voice Modems


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: Economy, Performance, Blast, Extreme and Gigabit. 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 business customers: See our Comcast Approved Modems for Business page for compatible modems.

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 approved modems and compare prices and features in a sortable table: All Comcast / Xfinity Approved Modems: 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.

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  • 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.

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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

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

Sales Ranking*: 4

Netgear Nighthawk DOCSIS 3.0 Cable Modem and AC-1900 WiFi Router (C7000)

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C7000
Netgear C7000 Specs

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The Netgear C7000 has an AC-1900 WiFi router built-in. It has 24 downstream channels and 8 upstream, plus a USB 2.0 port and 4 gigabit ethernet ports.

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  • 4.2/5 (9,925 ratings counted at all sellers)

Sales Ranking*: 2

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.

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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 AC1750 Wireless-AC DOCSIS 3.0 Cable Modem Router (C6300)

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C6300
Netgear C6300 Specs

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The Netgear AC1750 has a built-in dual band wireless-AC1750 router. With 16 downstream channels, 4 upstream. It also has 4 Gigabit Ethernet ports and a USB 2.0 port. We don't recommend this modem as it has latency problems. See more about that here: Puma 6 Chipset

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  • 4.2/5 (9,884 ratings counted at all sellers)

Sales Ranking*: 22

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

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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

Netgear N600 WiFi DOCSIS 3.0 Cable Modem Router (C3700)

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C3700
Netgear C3700 Specs

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The Netgear N600 has built-in dual band wireless-N600 router. If you have devices with dual band too, you can get exceptional WiFi speed. It also has 2 Gigabit Ethernet ports, a USB 2.0 port and 8 downstream channels, 4 upstream.

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  • 3.7/5 (8,747 ratings counted at all sellers)

Sales Ranking*: 14

SEE IT NOW AT:NEWUSED
Amazon $98.42
$42.00
Best Buy $98.99

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.

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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

Netgear N300 WiFi DOCSIS 3.0 Cable Modem Router (C3000)

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C3000
Netgear C3000 Specs

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The Netgear N300 has a built-in wireless-N300 router. It has 2 Gigabit Ethernet ports plus a USB 2.0 port for attaching a network drive. 8 downstream channels and 4 upstream. The CG3000DV2 is basically this modem with a N450 router.

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  • 4.0/5 (7,062 ratings counted at all sellers)

Sales Ranking*: 8

SEE IT NOW AT:NEWUSED
Amazon $73.99
$29.99

Motorola MG7310 DOCSIS 3.0 Cable Modem and N300 WiFi Router

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MG7310
Motorola MG7310 Specs

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The Motorola MG7310 has a built-in N-300 router. Four gigabit ports with 8 downstream channels and 4 upstream. Look also at the MB7315, which has an N-450 router.

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  • 3.5/5 (443 ratings counted at all sellers)

Sales Ranking*: 45

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ARRIS SBG7580-AC DOCSIS 3.0 Cable Modem and AC-1750 Router

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SBG7580
ARRIS SBG7580 Specs

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The ARRIS SBG7580 is one of the faster modems with a built-in AC-1750 router and 4 Gigabit ethernet ports. It has 32 downstream channels and 8 upstream. One of the fastest DOCSIS 3.0 modems available.

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  • 3.6/5 (383 ratings counted at all sellers)

Sales Ranking*: 17

SEE IT NOW AT:NEWUSED
Amazon $179.99
$127.39
Best Buy $179.99

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.

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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

ASUS CM-32 DOCSIS 3.0 Cable Modem with AC2600 WiFi Router

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CM-32
ASUS CM-32 Specs

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The ASUS CM-32 has an AC-2600 WiFi router built-in and 32 downstream channels, enough speed for almost all internet plans. Also has 8 upstream channels, a USB 2.0 port and 4 gigabit ports.

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  • 3.7/5 (219 ratings counted at all sellers)

Sales Ranking*: 21

SEE IT NOW AT:NEWUSED
Amazon $222.97
$165.37

Netgear C6250 DOCSIS 3.0 Cable Modem with AC-1600 WiFi Router

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C6250
Netgear C6250 Specs

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The Netgear C6250 comes with an AC-1600 WiFi router built-in. It has a USB 2.0 port to add a network drive. 16 channels downstream and 4 upstream.

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  • 3.9/5 (6,371 ratings counted at all sellers)

Sales Ranking*: 33

SEE IT NOW AT:NEWUSED
Amazon $134.99
$94.99
Best Buy $134.99

Netgear Nighthawk X45 DOCSIS 3.1 Cable Modem and AC-3200 WiFi Router (C7800)

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C7800
Netgear C7800 Specs

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The Netgear C7800 is a DOCSIS 3.1 modem with a built-in AC-3200 WiFi router. It's compatible with DOCSIS 3.0 plans, with 32 downstream channels and 8 upstream. It also has 2 USB 3.0 ports. A super fast modem that will work on all internet plans.

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  • 4.0/5 (219 ratings counted at all sellers)

Sales Ranking*: 18

SEE IT NOW AT:NEWUSED
Amazon $329.99
$323.39
Best Buy $329.99

TP-Link TC-W7960 DOCSIS 3.0 Cable Modem with N300 WiFi Router

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TC-W7960
TP-Link TC-W7960 Specs

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The TP-Link TC-W7960 has a built-in N300 WiFi router. Comes with one USB 2.0 port, 4 gigabit ports and has 8 downstream channels and 4 upstream channels. You might want to check out the CR-500, with 16 downstream channels and an AC-1200 router.

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  • 3.0/5 (1,217 ratings counted at all sellers)

Sales Ranking*: 27

SEE IT NOW AT:NEWUSED
Amazon $56.65
$72.00
Walmart $56.65

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.

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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.

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

Sales Ranking*: 26

TP-Link Archer CR700 DOCSIS 3.0 Cable Modem with AC1750 WiFi Router

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CR700
TP-Link CR700 Specs

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The TP-Link CR700 has a built-in AC-1750 WiFi router. Comes with 2 USB 2.0 ports, 4 gigabit ports and has 16 downstream channels and 4 upstream channels. Also take a peek at the CR1900, with 24 downstream channels and an AC-1900 router.

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  • 3.4/5 (763 ratings counted at all sellers)

Sales Ranking*: 32

ARRIS Surfboard SBG7400 DOCSIS 3.0 Cable Modem with AC2350 WiFi Router

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SBG7400
ARRIS SBG7400 Specs

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The ARRIS SBG7400 is a very fast modem with an AC-2350 WiFi router built-in. Comes with a USB 2.0 port and 24 downstream channels and 8 upstream.

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  • 4.2/5 (3,874 ratings counted at all sellers)

Sales Ranking*: 15

Motorola MG7550 DOCSIS 3.0 Cable Modem and AC-1900 WiFi Router

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MG7550
Motorola MG7550 Specs

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The Motorola MG7550 has a built-in AC-1900 router. Four gigabit ports with 16 downstream channels and 4 upstream.

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  • 4.3/5 (1,627 ratings counted at all sellers)

Sales Ranking*: 37

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 C6220 DOCSIS 3.0 Cable Modem with AC-1200 Wifi Router

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C6220
Netgear C6220 Specs

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The Netgear C6220 comes with an AC-1200 WiFi router built-in. It has a USB 2.0 port to add a network drive. 8 channels downstream and 4 upstream. Look at the C6250, with 16 downstream channels and an AC-1600 router.

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  • 4.1/5 (2,462 ratings counted at all sellers)

Sales Ranking*: 30

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.

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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

Linksys CG7500 DOCSIS 3.0 Cable Modem and AC-1900 WiFi Router

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CG7500
Linksys CG7500 Specs

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The LInksys CG7500 has a speedy AC-1900 WiFi router built-in. With 24 downstream channels and 8 upstream, it has plenty of speed for all but the gigabit speed plans.

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  • 3.8/5 (5,171 ratings counted at all sellers)

Sales Ranking*: 24

SEE IT NOW AT:NEWUSED
Amazon $94.95
$72.47
Best Buy $199.99

ARRIS SURFboard SBG6400 DOCSIS 3.0 Cable Modem with N300 Wi-Fi Router

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SBG6400
ARRIS SBG6400 Specs

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The ARRIS SBG6400 is an updated version of their very popular SBG6580. It has 8 downstream channels and 4 upstream. Comes with a N300 WiFi router built in and a USB 2.0 port to add a network drive.

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  • 2.8/5 (1,814 ratings counted at all sellers)

Sales Ranking*: 28

SEE IT NOW AT:NEWUSED
Amazon $39.89
$32.36

Netgear N450 WiFi DOCSIS 3.0 Cable Modem Router (CG3000Dv2)

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CG3000Dv2
Netgear CG3000Dv2 Specs

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The Netgear N450 has built-in wireless-N router, rated at 450 Mbps, faster than the Netgear C3000 which is rated at 300 Mbps. It has 4 Gigabit Ethernet ports and a USB 2.0 port. 8 downstream channels and 4 upstream. The C3700 is basically this modem with a N600 router, but only 2 Gigabit ports.

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  • 3.3/5 (2,038 ratings counted at all sellers)

Sales Ranking*: 25

SEE IT NOW AT:NEWUSED
Amazon $78.29
$28.94

TP-Link Archer CR1900 DOCSIS 3.0 Cable Modem with AC1900 WiFi Router

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CR1900
TP-Link CR1900 Specs

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The TP-Link CR1900 has a built-in AC-1900 WiFi router. Comes with 2 USB 2.0 ports, 4 gigabit ports and has 24 downstream channels and 8 upstream channels.

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  • 3.6/5 (35 ratings counted at all sellers)

Sales Ranking*: 49

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Motorola MG7315 DOCSIS 3.0 Cable Modem and N450 WiFi Router

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MG7315
Motorola MG7315 Specs

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The Motorola MG7315 has a built-in N-450 router. Four gigabit ports with 8 downstream channels and 4 upstream. Look also at the MB7310, which has an N-300 router.

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  • 4.2/5 (1,581 ratings counted at all sellers)

Sales Ranking*: 10

SEE IT NOW AT:NEWUSED
Amazon $99.99
$74.99
Best Buy $99.99

ARRIS Surfboard SBG6950 DOCSIS 3.0 Cable Modem with AC1900 WiFi Router

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SBG6950
ARRIS SBG6950 Specs

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The ARRIS SBG6950 is another fast modem with an AC-1900 WiFi router built-in. Comes with a USB 2.0 port and 16 downstream channels and 4 upstream. You might want to check out the SBG7400 with 24 downstream channels and an AC-2350 router.

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  • 4.2/5 (4,004 ratings counted at all sellers)

Sales Ranking*: 29

SEE IT NOW AT:NEWUSED
Amazon $159.99
$101.72
Best Buy $159.99

Motorola MB7621 DOCSIS 3.0 Cable Modem

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MB7621
Motorola MB7621 Specs

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The Motorola MB7621 is a speedy modem with 24 downstream channels and 8 upstream channels. A quality product.

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  • 4.2/5 (118 ratings counted at all sellers)

Sales Ranking*: 39

TP-Link Archer CR500 DOCSIS 3.0 Cable Modem with AC1200 WiFi Router

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CR500
TP-Link CR500 Specs

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The TP-Link CR500 has a built-in AC-1200 WiFi router. Comes with 2 USB 2.0 ports, 4 gigabit ports and has 16 downstream channels and 4 upstream channels. Also check out the CR700, with 16 downstream channels and an AC-1750 router.

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

Sales Ranking*: 23

SEE IT NOW AT:NEWUSED
Amazon $109.99
$100.00
Walmart $114.39

Linksys CM3024 DOCSIS 3.0 Cable Modem

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CM3024
Linksys CM3024 Specs

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The Linksys CM3024 has 24 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

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  • 3.9/5 (704 ratings counted at all sellers)

Sales Ranking*: 35

ASUS CM-16 DOCSIS 3.0 Cable Modem

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CM-16
ASUS CM-16 Specs

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The ASUS CM-16 has 16 downstream channels and 4 upstream, with one Gigabit ethernet port.

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  • 3.7/5 (219 ratings counted at all sellers)

Sales Ranking*: 38

SEE IT NOW AT:NEWUSED
Amazon $70.68
$40.92

NETGEAR C7500-100NAS Nighthawk X4 DOCSIS 3.0 Cable Modem with AC3200 WiFi Router

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C7500
Netgear C7500 Specs

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The Netgear C7500 is one of the fastest DOCSIS 3.0 modems available. Contains a built-in AC-3200 WiFi router and has 24 downstream channels and 8 upstream. Also includes a USB 2.0 port and 4 gigabit ports.

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  • 3.8/5 (5,171 ratings counted at all sellers)

Sales Ranking*: 41

SEE IT NOW AT:NEWUSED
Amazon $298.99
N/A
Best Buy $298.99

ARRIS Surfboard SBG10 Docsis 3.0 Cable Modem with AC1600 WiFi Router

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SBG10
ARRIS SBG10 Specs

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The ARRIS SBG10 modem has an AC-1600 WiFi Router. Only 2 gigabit ports on this model, but has 16 downstream channels and 4 upstream.

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  • 4.2/5 (3,873 ratings counted at all sellers)

Sales Ranking*: 31

SEE IT NOW AT:NEWUSED
Amazon $129.99
$107.91
Best Buy $119.99

Netgear CBR40 Orbi All-in-One Cable Modem with Whole Home Mesh-Ready AC2200 WiFi Router

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CBR40
Netgear CBR40 Specs

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The Netgear CBR-40 is a mesh network AC-2200 WiFi router for whole home coverage. The only one currently available. 24 downstream channels and 8 up for plenty of speed.

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  • 4.3/5 (94 ratings counted at all sellers)

Sales Ranking*: 42

SEE IT NOW AT:NEWUSED
Amazon $299.98
N/A

ARRIS / Motorola SBG6900-AC DOCSIS 3.0 Cable Modem with AC1900 Wi-Fi Router

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SBG6900
ARRIS SBG6900 Specs

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The ARRIS SBG6900 has a built-in wireless-AC1900 router, for the fast WIFI speeds. It also has 4 Gigabit ethernet ports. This is one of the faster modem/router combos that you can buy. 16 channels downstream, and 4-channel up. It also has a USB 2.0 port, so you can add a USB hard drive or flash drive and share files on the network.

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  • 4.5/5 (7,661 ratings counted at all sellers)

Sales Ranking*: 43

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.

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

Sales Ranking*: 40

Linksys CM3008 DOCSIS 3.0 Cable Modem

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CM3008
Linksys CM3008 Specs

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The Linksys CM3008 is a quality basic modem with 8 downstream channels and 4 upstream with one gigabit port.

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  • 3.9/5 (679 ratings counted at all sellers)

Sales Ranking*: 36

SEE IT NOW AT:NEWUSED
Amazon $37.78
$20.00
Walmart $59.99

ARRIS / Motorola SBG6700-AC DOCSIS 3.0 Cable Modem with AC1600 Wi-Fi Router

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SBG6700
ARRIS SBG6700 Specs

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The ARRIS SBG6700 has a built-in wireless-AC1600 router, for fast WIFI speeds. It also has 2 Gigabit Ethernet Ports. 8 downstream channels, and 4-channel up. A faster version of this is the SBG6900, with twice the maximum download speed and an AC1900 wireless router.

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  • 4.3/5 (8,450 ratings counted at all sellers)

Sales Ranking*: 44

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Netgear CM600 DOCSIS 3.0 Cable Modem

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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.

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ARRIS / Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem

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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.

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Linksys CM3016 DOCSIS 3.0 Cable Modem

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The Linksys CM3016 has 16 downstream channels and 4 upstream. We don't recommend this modem as it has latency problems. See more about that here: Puma 6 Chipset

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  • 3.9/5 (70 ratings counted at all sellers)

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Zoom Model 5370 DOCSIS 3.0 Cable Modem

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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)

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Zoom Model 5345 DOCSIS 3.0 Cable Modem

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

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ARRIS / Motorola SBG6580 SURFboard DOCSIS 3.0 Gateway Wireless Cable Modem

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The ARRIS / Motorola SBG6580 has a built-in dual band N300 router. It also has 4 Gigabit Ethernet Ports. 8 downstream channels, 4 upstream. The newer version is the SBG6700, which is a litter more, but has an AC-1600 router instead.

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SMC Networks D3CM1604 DOCSIS 3.0 Cable Modem

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The SMC Networks D3CM1604 is a DOCSIS 3.0 modem with 16 downstream channels and 4 upstream. Also has one gigabit ethernet port.

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  • 3.7/5 (164 ratings counted at all sellers)

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



Comcast Voice or Triple Play Customers:

You will need a cable modem called an EMTA or telephony modem. Not all Comcast regions let you buy your own EMTA modem. Call your local Comcast service center and check if they allow customer owned EMTA modems or check the Comcast Approved Cable Modem List and enter your zip code and select "Voice/Telephone enabled" on the lower left. If so, the following can be bought from Amazon (these links takes you to Amazon):

These are the only retail modems that will work with Comcast phone service.

If you don't need the built in WIFI router of the TG862G, you can put it in bridge mode and use your own WIFI router.

Another option is get rid of Comcast Voice and sign up with a voice over IP (VoIP) company such as Callcentric. For $3.45 per month plus 1.5 cents per minute (other pricing plans available), you can use your current phone number, get free voice mail, caller id, forward your messages to your email, automatic spam / telemarketing call blocking, message text alerts, block and forward certain calls, 911 service; all the features of Comcast Voice plus many more. Quality is as good as Comcast's. If you don't use your home phone much anymore, this is a great option. Now, you could buy your own modem and save even more per month. We've been using Callcentric for almost 5 years now and absolutely love it.
How we set-up Callcentric plus more information

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Topic: Comcast
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Deena (Los Lunas) says...
I have only basic Internet and cable .. I've been using a modem that I bought at a yard sale but now after 3 years Comcast has decided they are going to charge me a rental fee unless I turn in modem and purchase a new one . I don't have voice or anything just basic .. So what would be a good one for me to purchase
Dan says...
I'd recommend the Arris SB6183, if you think you'll be getting faster service in the next few years. A cheaper alternative would be the Arris SB6141, which works fine for basic internet speeds.
John (Denver) says...
Good info. Just enabled bridge mode.
Technician from Comcast said it could not be done. Whooda thunk.
Jaz (Knoxville) says...
If i just want the internet and want to by a router to use wirh my fire stick what would be the best kind and where can i buy it from.
Jill (Greensburg) says...
Yep. Me too. Could someone answer us please?
Dan says...
If you have the 2015 version of the Amazon fire stick, go back to the top of this page and under Show All Modems select WITH any Wireless Router.

If you have the 2016 version and want the fastest speed, select WITH a Wireless-AC Router. The 2016 version is wireless-AC compatible while the 2015 version is not. Any of those modem/router combos will work fine with the fire stick.

If you already have a modem, a good router to buy is this one at Amazon: TP-LINK Archer C7 AC1750 Wireless Dual Band Gigabit Router

Bob Swemba (Powhatan) says...
I currently lease a Arris TG1682 Router from Comcast. They keep raising the rental rate so I would like to buy a comparable router. This router is dual band and works well. My problem is since I use voice and internet there are no options to get a comparable router that Comcast supports. The only one you can use is the Arris TG862G which is single band. This was the model that I traded in at a comcast store to get the Tg1682.Its a total ripoff that you cannot buy the Tg1682 retail and Comcast refuses to sell me the one that I presently have. If I get rid of the voice option then that raises the price of the internet package. They definitely have me over the barrel
Fred G Kraft (Monroe Township) says...
I have a Arris touchstoneTM822G. Comcast wants me to upgrade. To what?
Ray (Herriman) says...
I do have phone service bundled with my internet, however only because there was a deal for the bundle. But I do not even use the land line - I'm all mobile. So I don't care if the phone service works, only if the modem will still work. It is a NetGear CM600, which is DOCSIS 3.0. Can anyone confirm either way?
Dan says...
My understanding is Comcast won't let you use a modem without telephone capabilities if you have their phone service. See potatoguy's and sonofzell's comments a few comments below this one. So you'd either have to dump the phone service or buy a telephone ready (EMTA) modem. Those are listed here: Comcast Voice Modems. If anybody has heard differently or gotten it to work, please let us know.
Margaret Bateman (Yarmouthport) says...
I want to replace my Arris TG872 modem that I am leasing from Comcast. I'm thinking of SB6141 as my speed is going to be lowered from Blast. Your thoughts or suggestions? Thank you.
Dan says...
I don't think there is an ARRIS TG872. If you meant the TG862, then the SB6141 will be fine. But if you still have phone service with Comcast, the SB6141 will not work. More phone service modem info here: Comcast Voice Modems
MELINDA DOWNING (Alameda) says...
If I buy the Arris 722 modem (used off Amazon: Arris Tm722g Cable Modem Docsis 3.0 ) for use with Comcast internet & voice, what is the best router to get to use with it for my WiFi capability.
John Steinbach (Lockport) says...
I had a modem with 4 phone lines that is nearing it's end of life. I have a home office with house line, office line & fax line. I'm NOT a business, just work from home & my employer requires the separate phone/fax lines. Can't find a modem with 4 voice lines & Comcast said they only rent them to business customers.
potatoguy says...
Can I get a voiceless modem if I'm paying for voice/internet? I just want the internet to work.
sonofzell (Philadlephia) says...
Sadly, no. I purchased the Netgear AC1750 (which worked BRILLIANTLY!), and was promptly shut-down by Comcast.

They claim it is a liability issue to not have a voice modem if you're paying for the service.

I'm now relegated to the Arris TG862G/CT which, in terms of wifi, is about as useful as placing a brick on my desk.

I've been exhaustively searching for a replacement and have just come to terms with having to just buy a decent router to put in front of the Arris. I'll have spent close to $400 when all is done, but I haven't found any other alternative.

Waffle (Orlando) says...
We are looking into switching from AT&T U-Verse to X1 Preferred Plus Triple Play with digital voice and up to 150 Mbps downstream. Would it be possible to purchase a modem and a WiFi router that is approved by Comcast for one voice line and the 150 Mbps download speeds? Would we be able to expect down speeds of at least 50 Mbps on two wired connections and 40 Mbps on wireless connections? I was looking at the TG862G/CT and TM722G from ARRIS for modems and the AC1900 Nighthawk WiFi Range Extender from Netgear. Would any of these be able to match the performance of rented equipment?
Dan says...
You'd want to go with the TG862G/CT (8 download channels) over the TM722G (4 download channels). The latter would have trouble at 150 Mbps, if it could even do it. You could easily get the 2 wired connections to go 50 Mbps.

As for the wireless connection, that's going to depend on interference, wall construction, distance from the extender and other things that affect wifi performance. The TG862G/CT has wireless-N wifi while that extender has wireless-AC. It will work, but you won't get wireless-AC speeds. You should be able to get 40 Mbps, but the factors I listed above might reduce that. If its not fast enough, you could try putting the TG862G into bridge mode and buy a separate wireless-AC router and plug that into the TG862G.

Traci (Memphis) says...
I just want to keep following this stream for current postings. Thanks for all the info. I am trying to select modems and/or routers for both work and home environments all with different situations (current att want Comcast, have Comcast would like to improve, some with triple play, possibly look to have internet only, etc.). Please keep the recommendations coming.
Walt (Elmwood Park Il) says...
I am greenhorn in the field. Comcast rents me xfinity Dual-Band WiFi 802.11ac XB3. Please recommend compatible one I can buy to return the rented one. Or any other advices how to do the job myself.
Thanks Walt. Please answer to my email
Dan says...
As of now, there is no modem that you can buy with the same capabilities as your current XB3 modem. Your current modem has voice, at least 16 download channels and wireless-AC. The only voice modem currently available to buy has 8 download channels and and wireless-N. Don't know if that would be fast enough for you, but you can see more info here: Comcast Voice or Triple Play Modems
Sara (Decaatur) says...
I have Triple Play and have Xfinity router/modem. Went to Best Buy and looking at purchasing new computer and they are recommending I go with new router with AC capability. When I called local Comcast they said I could certainly buy my own and referred me to this website. I called Best Buy and told him what it says. He said I could go with AC router and separate modem. Does that sound right?
Dan says...
That is right. I prefer to have a separate modem and a router. While for most basic users the combined units are fine, having separate devices allows you to upgrade your router easily if needed plus the stand alone routers tend to have more features and work better.
trevis scott (Atlanta) says...
What modem would you recommend if you want to use the separate router and modem? I have Triple play with phone service. I really don't want with the all in one modem/router.
Dan says...
If you have Triple Play, you don't have many options at this time. You can try to find an Arris TM722G (no built-in router), but they are hard to find. Or you can buy the Arris TG862G (with built-in router) and either try the built-in WIFI router or put it in bridge mode and use your own WIFi router instead.
kathleen w (Dothan Al) says...
I bought 2 modems ,spent all day installing /un installing them,they did not work,the man at the local office said you can't buy any that works with Comcast,let me know if anyone has the right info on the above,thanks.
Dan says...
If its a modem with telephone capabilities, that could be true. Some Comcast regions don't allow customers to buy and install them. If its not, according to the FCC, they have to allow you to buy your own modem as long as its on the Comcast approved list.
Caitlin says...
I am stuck with Comcast because the property manager has a contract with them and there's no method for residents to buy service elsewhere. Try to separate a "bundle" and Comcast will hit the customer with per diem fees for the remaining services. In other words: take out the phone service and the price for TV and Internet sky rockets well beyond the bundle price for the three. It's a racket.

All I'm trying to do right now is figure out how to get the monthly costs for the rental equipment down by making purchases. I'm told it is possible to buy a modem for the phone and Internet. But not possible to buy boxes for the TV sets. True? Not true?

HELP!

Dan says...
It is true that you can't buy a set-top box for Comcast yet. The FCC has voted to allow consumers to buy them in the future, but all the regulations and specifications haven't been worked out. Could be a year or years before that's all done.

There are modems you can buy for phone and internet. You should check with Comcast and make sure your region allows consumers to buy their own. You can read more here: Comcast Voice or Triple Play Modems

Barbara DuBois (Boulder) says...
I am getting the Comcast triple play and since you don't recommend getting the TG 862 G modem the only one left on your list is the Tm722 g...which is no longer available new, yet highly recommended..and just n/a new. so what does someone do now?. I don't want combo router/modem.thx
Dan says...
I'm sure it was just a typo on your part, but we do recommend the TG862G, its the TM822G that we don't. You're right, as of right now, your only option for a new modem is to buy the TG862G and if you don't want the WIFI part of it, turn it off and put the modem in bridge mode.
JB (The Woodlands) says...
I have Comcast Triple Play. I have the ARRIS TG862G Docsis 3 that is recommended but I have very poor wi-fi. I would like to get a separate router but don't know which one to get. Also, how do I make my ARRIS TG862G modem "bridge" and connect the new router when I get it? Thanks for your help!
Dan says...
As for putting the ARRIS TG862G in bridge mode, look here: Comcast instructions for bridge mode

I would plug your computer via ethernet into Port 1 of your modem before doing this, so when the wifi is turned off you still have a connection. If you don't see an option for bridge mode, you'll have to call Comcast and have them do it. You then plug your WIFI router into Port 1 of the modem.

A good, popular and moderately priced WIFI router is this one at Amazon: TP-LINK Archer C7 AC1750 Wireless Dual Band Gigabit Router

Rich (Seattle) says...
Hi Dan,
I have the Arris TG862G. Comcast could not make the modem work here in Seattle. These were used units of ebay. I tried a second unit with no better results. Any suggestions?
Thanks
Dan says...
Often when you buy a used modem, especially on eBay or from a private party, the modem is actually property of the cable company and the seller is a former customer who basically stole it. Comcast knows the serial numbers of these and won't authorize them.

If it wasn't stolen, the modem could still be registered to the former owner and Comcast won't let you use it until the former owner calls Comcast and un-registers it. This actually happened to me a few years ago when I bought a supposedly "new" modem on eBay.

I suppose they both could of been defective and it was just bad luck. All I can suggest is to either buy a new one or buy one from a reputable used modem dealer.

M Forbes (Norton) says...
I use a TIVO box and Comcast gave me the CableCard tuner to use at no cost. I do not have a Comcast/Xfinity set top box for my television.
Dan says...
Good point! Comcast and TIVO have partnered up to make some of the TIVO models work well with Comcast. Just remember to get a TIVO model that supports Comcast's On Demand service, if you use that. Some of the older models do not. Here's some links to TIVO's at Amazon that do support Comcast's On Demand: TIVO Bolt and TIVO Roamio
Ronni (Pompano Beach) says...
I am looking to replace the Xfinity modem that has an HDMI port - not an ethernet port and I am not finding one. Motorola said they don't make one. Can anyone help me to find a modem with HDMI so I can stop paying Comcast the rent for their modem? I do appreciate your assistance.
Dan says...
HDMI is for carrying video and audio and ethernet is for data, so there's no reason for a cable modem to have an HDMI port. Some modems have a USB port in addition to an ethernet port. Could that be what you're seeing? The set-top box that you plug your TV into has a HDMI port, but you can't replace that yet.
Sue (Dublin) says...
Thanks for this thread, Dan. It has been helpful. Can you confirm that if I purchase the retail Arris TG862G (or any other retail EMTA modem/router that I won't have the "xfinitywifi" open network that is now embedded on my leased version? That is my ultimate goal as we are pretty sure someone near us is using our wifi, even though Comcast insists it won't drain our speed. Thanks!
Dan says...
You can turn off the "xfinitywifi" open network or Home Hotspot as Xfinity calls it whether you buy or lease your modem. You have to log into your Comcast account online. Here's the instructions straight from Xfinity: Xfinity instructions to turn off Home Hotspot
David (Tukwla) says...
The XfinityWifi does not impact the private accounts speed. Docsis 3 modems bond 6 MHz channels to get their speed, each channel is around 38Mbps. So you have your provisioned service and the XWifi has it's own provisioned network. This makes it both safe from intrusion since they're subnetted and speed stable.

The people that would be using the XfinityWifi network would either be customers that login with their email or individuals that pay for access. Free access is limited to I think an hour.

If you are getting slow downs, it would either be a signal issue to the modem, interference on the channel the wifi signal is using, a system issue, or others that figured out your access password.

Chae says...
I have comcast 25 mbps plus two phone lines. I'm thinking of getting the 75 mbps service and cut out one or both phone lines.If I cut out both lines, Comcast is quoting $100. If keep a phone line, it's $80. So, I may go with the $80 option, replace the modem with the one you recommend, and get that callcentric service for the second line. So, do I start with callcentric, get that ported over, then replace the modem, then connect the second line with the ATA adapter? Is this the order of ops? thx in advance.
Dan says...
That's the order I would do it in so there's no disruption in your phone service . It can take a week or two to port over your number to Callcentric.
cynthia barrows (Sacramento) says...
Im looking for a "cheap" DOCSIS 3.0 modem compatible with xfinety comcast cable? Asap where can i get one by tomarrow?
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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

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Suddenlink

Time Warner/Road Runner/Bright House


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