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Did you forget your voice mail password? How about problems with the fax machine? Going on a trip and need to manage call forwarding? Whatever your question, we make sure our digital telephone support has the answers.

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Cox Certified Cable Modems

Last Updated: Thu, 12 Jan 2017 > Related Articles

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View information on approved modems for use on all Cox High Speed Internet packages, excluding Gigablast.


The DOCSIS 3.0 and 3.1 devices listed below meet our service and performance requirements and are certified for use with all Cox High Speed Internet packages, excluding Gigablast.

  • Speeds are not guaranteed and may vary based on individual circumstances.
  • Cox does not promote or endorse any particular device or manufacturer for your use.
  • Review the modem manufacturer’s specifications to choose a device based on your individual needs.

If you have a DOCSIS 2.0 device, Cox strongly recommends that you upgrade to a DOCSIS 3.0 device in order to receive optimal speeds. Future speed increases may not be achievable with these devices. To upgrade your device, visit www.cox.com/upgrademymodem.


DOCSIS 3.0 devices are required for all new Cox High Speed Internet customers. Current Cox customers should ensure they have a DOCSIS 3.0 device in order to consistently receive optimal speeds. Additionally, Ultimate customers are required to have a DOCSIS 3.0 device with a minimum of 16 x 4 or higher channel bonding to achieve package speeds.


DOCSIS 3.1 devices listed below are certified for use with all Cox High Speed Internet package speeds, excluding Gigablast.

  • Cox-certified DOCSIS 3.1 devices are backward-compatible with DOCSIS 3.0 technology.
  • DOCSIS 3.1 service may not be available in all areas.

Special Recommendations for WiFi

  • If your primary Internet usage will be via wireless devices such as laptops, tablets, and mobile devices, Cox recommends a dual band 802.11-AC WiFi modem. Dual band 802.11-AC WiFi modems provides the best in-home WiFi experience.
  • To learn more about WiFi, visit www.cox.com/wifisupport.

Note: The Highest Compatible Package outlined in the table below is based on a wired connection.

BrandModelChannelsHighest Compatible PackageDual Band 802.11AC WiFi Modem
ARRIS / SurfboardDG246024 x 8UltimateYes
ARRIS / Surfboard TG247224 x 8UltimateYes
ARRIS / Surfboard SB61204 x 4PreferredNo
ARRIS / Surfboard SB61214 x 4PreferredNo
 ARRIS / SurfboardSB61418 x 4PremierNo
ARRIS / Surfboard SB61808 x 4PremierNo
ARRIS / Surfboard SB61828 x 4PremierNo
 ARRIS / SurfboardSB618316 x 4UltimateNo
ARRIS / Surfboard SB619032 x 8UltimateNo
ARRIS / Surfboard SBG64008 x 4PremierNo
ARRIS / Surfboard SBG65808 x 4PremierNo
 ARRIS / SurfboardSBG67008 x 4PremierYes
 ARRIS / SurfboardSBG67828 x 4PremierYes
 ARRIS / SurfboardSBG758032 x 8UltimateYes
 ARRIS / SurfboardSBG6900-AC16 x 4UltimateYes
 ARRIS / SurfboardSB8200DOCSIS 3.1
32 x 8
 CiscoDPC30004 x 4PreferredNo
 CiscoDPC30088 x 4PremierNo
 CiscoDPC30108 x 4PremierNo
Cisco DPC38258 x 4PremierNo
 CiscoDPQ39258 x 4PremierNo
DLinkDCM3018 x 4PremierNo
Hitron-ZyxelCDA303608 x 4PremierNo
Linksys CM30088 x 4PremierNo
Linksys CM301616 x 4UltimateNo
 LinksysCM302424 x 8UltimateNo
 Motorola MB72208 x 4PremierNo
 Motorola MB742016 x 4UltimateNo
 MotorolaMG73108 x 4PremierNo
 MotorolaMG73158 x 4PremierNo
 MotorolaMG755016 x 4UltimateYes
 NetgearC30008 x 4PremierNo
Netgear C37008 x 4PremierNo
 NetgearC625016 x 4UltimateNo
 NetgearC630016 x 4UltimateYes
 NetgearC6300BD8 x 4PremierYes
 NetgearC690024 x 8Ultimate Yes
Netgear C700024 x 8UltimateYes
 NetgearCG3000D8 x 4PremierNo
 NetgearCG3000Dv28 x 4PremierNo
 NetgearCG4500BD8 x 4PremierNo
 NetgearCMD31T4 x 4PreferredNo
 NetgearCM4008 x 4PremierNo
 NetgearCM50016 x 4UltimateNo
 NetgearCM60024 x 8UltimateNo
Netgear CM70032 x 8UltimateNo
 NetgearCM1000DOCSIS 3.1
32 x 8
Ultimate No 
 TP-LINKTC-76108 x 4PremierNo
TP-LINKTC-762016 x 4UltimateNo
 TP-LINKTC-W79608 x 4PremierNo
 TP-LINKCR70016 x 4UltimateYes
 UbeeDDW3658 x 4PremierNo
UbeeDDW3668 x 4PremierNo
UbeeDVW3268 x 4PremierNo
Zoom53414 x 4PreferredNo
Zoom5341J8 x 4PremierNo
Zoom53458 x 4PremierNo
Zoom53508 x 4PremierNo
Zoom53528 x 4PremierNo
Zoom53548 x 4PremierNo
Zoom53608 x 4PremierNo
Zoom53638 x 4PremierNo
Zoom537016 x 4UltimateNo

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