The following list of cable modems has been certified by Comcast to work on the Comcast High-Speed Internet network. If you purchase one of these modems, and wish to return your existing rental unit, please contact your local Comcast office to make arrangements for its return.

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Model Notes
3Com back to top
3CR20221

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

3CR20223

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

3CR29220

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

External CMX 2940

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

Aastra / Ericsson back to top
HM200c

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

Ambit back to top
60678E

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

60740EUW  
U10C018  
Arris back to top
CM300

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

CM450a

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

Belkin back to top
F5D5530-W

Need USB drivers? Download them from comcast.net!

Bestdata back to top
CMX100

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

CMX110

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

CMX300

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

CMX300v2  
Broadxant back to top
8601

Need USB drivers? Download them from comcast.net!

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

CastleNet back to top
CXC150

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

CXC250

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

DP1110XB2  
Cisco back to top
UBR 904

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

UBR 905

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

UBR 925

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

Com21 back to top
CM CP-3001 (DP1010)

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

CM DP101

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

CM DP111

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

CM DP1110

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

CM DP1110XB

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

D-Link back to top
DCM100

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

DCM200

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

DCM201

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

DCM202  
Ericcson back to top
PipeRider HM200c

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

High Speed Surfing back to top
SM100

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

SM200

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

Linksys back to top
BEFCMU10

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

BEFCMU10 ver2

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

BEFCMU10 ver3

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

BEFCMU10 ver4  
BEFCMUH4

This modem has an integrated router that is currently not supported by Comcast. While Comcast will support this modem's connectivity to the Internet, please direct any issues with the router or wireless Internet functionality to the vendor.

WCG200

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

Motorola back to top
SB3100

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

SB3100D

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

SB4100

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

SB4101

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

SB4200

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

SB4220

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

SB5100

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

SB5101  
SB5120

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

SBG900

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

SBG1000

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

This modem has an integrated router that is currently not supported by Comcast. While Comcast will support this modem's connectivity to the Internet, please direct any issues with the router or wireless Internet functionality to the vendor.

Netgear back to top
CM212

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

CG814W

Need USB drivers? Download them from comcast.net!

CG814WG

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

CG814WGV2  
CG814M

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

CG814Mv2

Need USB drivers? Download them from comcast.net!

RCA back to top
DCM105

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

DCM205

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

DCM215M

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

DCM225/226

Need USB drivers? Download them from comcast.net!

DCM235

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

DCM245/245R

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

The DCM245 and the DCM245R are the same identical modem. The "R" was added by TCE/RCA to help them distinguish between MSO shipped modems and retail shipped modems. The "R" stands for retail modems.

DCM305

Need USB drivers? Download them from comcast.net!

DCM315

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

DCM325

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

DCM425

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

DHG525  
DCW615

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

This modem has an integrated router that is currently not supported by Comcast. While Comcast will support this modem's connectivity to the Internet, please direct any issues with the router or wireless Internet functionality to the vendor.

DCW725

This modem has an integrated router that is currently not supported by Comcast. While Comcast will support this modem's connectivity to the Internet, please direct any issues with the router or wireless Internet functionality to the vendor.

Samsung back to top
CM100-R

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

SCM-120U

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

SCM-140U

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

Scientific Atlanta / Webstar back to top
DPX100

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

DPX110

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

DPX2100

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

DPC2100

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Siemens Speedstream back to top
SS6101

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

SMC back to top
8002

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

8004CM

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

8011

Need USB drivers? Download them from comcast.net!

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

8012WG

Need USB drivers? Download them from comcast.net!

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

8013WG

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

This modem has an integrated router that is currently not supported by Comcast. While Comcast will support this modem's connectivity to the Internet, please direct any issues with the router or wireless Internet functionality to the vendor.

Terayon back to top
ECM110/TJ110

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

ECM210/TJ210

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

ECM615/TJ615

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

TJ715/TJ715x

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

TJ716x  
Toshiba back to top
DAZ8801F (PCX1000)

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

DAZ8811F (PCX1100)

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

DAZ8813F (PCX1100U)

Need USB drivers? Download them from comcast.net!

PCX2000

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

PCX2200

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

PCX2500

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

PCX2600

Need USB drivers? Download them from comcast.net!

PCX5000

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

This modem has an integrated router that is currently not supported by Comcast. While Comcast will support this modem's connectivity to the Internet, please direct any issues with the router or wireless Internet functionality to the vendor.

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

Zoom back to top
5011

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

5041

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.

5141  
5241

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

Need USB drivers? Download them from comcast.net!

Zyxel back to top
Prestige 941

Can't find your manual? View it on Comcast.net! (requires Adobe Reader)

This modem cannot be upgraded to comply with the DOCSIS 1.1 specification. If you currently use this model it is not necessary to remove it from the network. However, this device should not be returned to service if sent back to the warehouse, nor should it be purchased for use with the Comcast High-Speed Internet Service.