There are many type of cox internet modem compatibility, you can check below list with features

NETGEAR Nighthawk Cable Modem WiFi Router Combo C7000-Compatibility Cable Providers including Xfinity by Comcast, Spectrum, Cox (Renewed)

$129.99  in stock
3 new from $129.99
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as of May 23, 2020 4:45 am

Features

  • COMPATIBLE WITH ALL MAJOR CABLE INTERNET PROVIDERS: Including certification by Xfinity by Comcast, COX, and Spectrum. NOT compatible with Verizon, AT&T, CenturyLink, DSL providers, DirecTV, DISH and Cable bundled voice services
  • SAVE MONTHLY RENTAL FEES: Model C7000 replaces your cable modem and WiFi router saving you up to $150/yr in equipment rental fees. System Requirements Cable broadband Internet service, Check your cable Internet service provider web site for data speed tier compatibility, Not compatible with Cable bundled voice services, Microsoft Windows 7, 8, Vista, XP, 2000, Mac OS, UNIX, or Linux, Microsoft Internet Explorer 5.0, Firefox 2.0, Safari 1.4, or Google Chrome 11.0 browsers or higher
  • BUILT FOR FAST SPEED: Best for cable provider plans up to 400 Mbps speed
  • FAST Wi Fi PERFORMANCE: Get up to 1800 sq ft wireless coverage and 30 devices connected with AC1900 speed (up to 1900 Mbps)
  • VERSATILE CONNECTIONS: 4 Gigabit Ethernet ports and 2 USB ports give you fast wired connections to your computer, printer, game box, storage drive, and other devices

NETGEAR Cable Modem CM500 - Compatible with all Cable Providers including Xfinity by Comcast, Spectrum, Cox | For Cable Plans Up to 300 Mbps | DOCSIS 3.0

$62.99
$59.63  in stock
1 new from $59.63
45 used from $18.10
Free shipping
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Amazon.com
as of May 23, 2020 4:45 am

Features

  • COMPATIBLE WITH ALL MAJOR CABLE INTERNET PROVIDERS: Including certification by Xfinity by Comcast, COX, and Spectrum. NOT compatible with Verizon, AT&T, CenturyLink, DSL providers, DirecTV, DISH and any bundled voice service.
  • SAVE MONTHLY RENTAL FEES: Model CM500 replaces your cable modem saving you up to $168/yr in equipment rental fees.
  • BUILT FOR FAST SPEED: Best for cable provider plans up to 300 Mbps speed.
  • WORKS WITH ANY WiFi ROUTER: Connect any WiFi router to this modem's ethernet port to support all your wireless devices.
  • ETHERNET CONNECTIONS: 1 Gigabit Ethernet port connects to your computer or separate WiFi router.

Arris SURFboard (16x4) Docsis 3.0 Cable Modem Plus AC1900 Dual Band Wi-Fi Router, Certified for Xfinity, Spectrum, Cox & More (SBG6950AC2),Black

$159.99
$123.98  in stock
8 new from $116.99
7 used from $91.26
Free shipping
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as of May 23, 2020 4:45 am

Features

  • 3 products in 1: 16x4 Cable Modem, AC1900 Dual band Wi-Fi Router, 4 Port Gigabit Router. Operating System Compatibility-Linux, Mac, Unix, Windows
  • APPROVED with major U.S. Cable Providers Xfinity and Cox. Compatible with Spectrum (Time Warner, Charter and Brighthouse). REQUIRES Cable Internet Service. Not compatible with ATT, Verizon or CenturyLink
  • Cable Modem: 16 DOWNLOAD & 4 UPLOAD channels to maximize your Cable ISP service offerings. APPROVED for plans up to 300 Mbps. Supports IPv4 and IPv6 ? the latest Internet standard.
  • Router: AC1900 2.4/5.0 GHz Dual-band Concurrent Wi-Fi Router with 4 Gigabit Ethernet ports. Wi-Fi beamforming ? max coverage and performance.
  • Security: McAfee Secure Whole Home Internet with App to monitor and configure. Support for multicast ip services also is backward compatible with docsis 2.0 contact your cable service

NETGEAR Nighthawk Cable Modem WiFi Router Combo (C7800) - Compatible with Cable Providers Including Xfinity by Comcast, Cox, Spectrum | Cable Plans Up to 2 Gigabits | AC3200 WiFi Speed | DOCSIS 3.1

$369.99
$269.00  in stock
2 new from $399.99
16 used from $269.00
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Amazon.com
as of May 23, 2020 4:45 am

Features

  • COMPATIBLE WITH ALL MAJOR CABLE INTERNET PROVIDERS: Including certification by Xfinity by Comcast and COX. NOT compatible with Spectrum, Verizon, AT&T, CenturyLink, DSL providers, DirecTV, DISH and any bundled voice service.
  • SAVE MONTHLY RENTAL FEES: Model C7800 replaces your cable modem and WiFi router saving you up to $168/yr in equipment rental fees.
  • BUILT FOR ULTIMATE SPEED: Best for cable provider plans up to 2 Gigabits speed.
  • FAST WiFi PERFORMANCE: Get up to 3000 sq ft wireless coverage and 45 devices connected with AC3200 speed (up to 3200 Mbps).
  • VERSATILE CONNECTIONS: 4 Gigabit Ethernet ports and 2 hi-speed USB 3.0 ports give you fast wired connections to your computer, printer, game box, storage drive, and other devices.

NETGEAR C3000-100NAS N300 (8x4) WiFi DOCSIS 3.0 Cable Modem Router (C3000) Certified for Xfinity from Comcast, Spectrum, Cox, Cablevision & More

$94.99
$79.99  in stock
7 new from $79.99
16 used from $39.99
Free shipping
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Amazon.com
as of May 23, 2020 4:45 am

Features

  • Compatible with Xfinity from Comcast, Spectrum, Cox, CableONE & more; Double firewall protection (SPI and NAT firewall)
  • Three in one DOCSIS 3.0 Cable Modem + N300 WiFi Router+ 2 Gigabit Wired Switch. ELIMINTE MONTHLY CABLE MODEM RENTAL FEES Up to $156 per year
  • DOCSIS 3.0 unleashes 8x faster download speeds than DOCSIS 2.0
  • NETGEAR Genie App Content filtering Parental Controls allow you to manage your network from anywhere
  • Note check your cable internet service provider web site for data speed tier compatibility. Ieee 802.11 b/g/n 2.4 GHz. Not compatible with cable bundled voice services

NETGEAR CM700 (32x8) DOCSIS 3.0 Gigabit Cable Modem. Max download speeds of 1.4Gbps. Certified for XFINITY by Comcast, Time Warner Cable, Charter & more (CM700)

$109.99
$74.96  in stock
10 new from $99.94
3 used from $74.96
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as of May 23, 2020 4:45 am

Features

  • Up to 1.4Gbps download and upload speed. Separate router required for WiFi. 32x8 channel bonding . Cable Broadband Internet service: Please check your cable Internet service provider web site for data speed tier compatibility.Microsoft Windows 7, 8, Vista, XP, 2000, Mac OS, or other operating systems running a TCP/IP network. Microsoft Internet Explorer 5.0, Firefox 2.0, Safari 1.4, or Google Chrome 11.0 browsers or higher

NETGEAR CM700 (32x8) DOCSIS 3.0 Gigabit Cable Modem. Max download speeds of 1.4Gbps. Certified for XFINITY by Comcast, Time Warner Cable, Charter & more (CM700) (Renewed)

$79.95  in stock
5 new from $79.95
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Amazon.com
as of May 23, 2020 4:45 am

Features

  • Support Cable Internet Service plans up to 500 Mbps. Separate router required for WiFi. 32x8 channel bonding
  • DOCSIS 3.0 up to 32x faster download speeds than DOCSIS 2.0.Memory: 8 MB NOR flash and 128 MB RAM
  • ELIMINATE MONTHLY CABLE MODEM RENTAL FEES - Up to $120 per year. Compatible with Xfinity from Comcast, Spectrum, Cox, CableONE & more
  • Not compatible with: Verizon, AT&T, or CenturyLink. Not compatible with bundled voice services. IPv6 next generation Internet addressing support
  • System Requirements is microsoft windows 7, 8, 10, vista, xp, 2000, mac os, or other operating systems running a tcp/ip network. Microsoft internet explorer 5.0, firefox 2.0, safari 1.4, or google chrome 11.0 browsers or higher. Check your cable Internet service provider web site for data speed tier compatibility

Cisco DPC3008 (Comcast, TWC, Cox Version) DOCSIS 3.0 Cable Modem (Renewed)

$39.95  in stock
1 new from $39.95
Free shipping
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Amazon.com
as of May 23, 2020 4:45 am

Features

  • This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com

NETGEAR Nighthawk AC1900 (24x8) DOCSIS 3.0 WiFi Cable Modem Router Combo For XFINITY Internet & Voice (C7100V) Ideal for Xfinity Internet and Voice services (Renewed)

$149.99  in stock
4 new from $149.99
Free shipping
Buy Now
Amazon.com
as of May 23, 2020 4:45 am

Features

  • This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com
  • Compatible with Xfinity from Comcast
  • Three-in-one DOCSIS 3.0 Cable Modem + AC1900 WiFi Router+ Xfinity Voice and 2 USB ports
  • Up to 960Mbps modem speed and Dual-Band AC1900 (2.4GHz & 5GHz) WiFi speed. 24x8 channel bonding/ Approved for plans up to 500 Mbps
  • DOCSIS 3.0 unleashes 24x faster download speeds than DOCSIS 2.0

BrosTrend 1200Mbps WiFi Range Extender Signal Booster Repeater, Add Coverage up to 1200 sq.ft. in Your House, Extend 2.4GHz & 5GHz Wi-Fi, Easy Setup

$49.99
$41.99  in stock
1 new from $41.99
Free shipping
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Amazon.com
as of May 23, 2020 4:45 am

Features

  • EXTENDED WIRELESS COVERAGE: Adds Wi-Fi Range Coverage up to 1200 sq. ft., and Connects up to 20 Devices such as Smartphones, Tablets, Laptops, Speakers, IP Cameras, IoT Devices, Alexa Devices and more, by Using this WiFi Booster for the House
  • AC1200 WI-FI SPEED: With Simultaneously Extended Speed of 867Mbps on 5GHz WiFi Band and 300Mbps on 2.4GHz Band, Enjoy Online 4K Video Streaming, Multi-users Gaming, Music etc., by Connecting Your WiFi Devices to the Network Extended by this WiFi Extender Signal Booster Without Buffering or Interruption
  • EASY SET UP IN SECONDS: Press WPS Button on Your Existing Router and this WiFi Network Extender, Instantly Extends Your Network Coverage; Smart LED on Extender Indicates Signal Strength with Existing Router; Move to Any Electrical Outlets After Initial Setup
  • UNIVERSAL COMPATIBILITY: Extend the Network Coverage of Any Wireless Routers or ISP Gateways on the Market by Using this WiFi Extender for the House; WHITE COLOR and Compact Wall-plug Design of this Extender Easily Blends Into Your Home D├ęcor
  • 2 YEAR WORRY FREE WARRANTY: Also Comes with Free 24/7 Technical Support, Email: [email protected]; This Internet Booster Wireless Range Extender Has 1 Fast Ethernet Port, Connect A Wired Device to WiFi, Like TV, PlayStation, XBox; Also Supports Access Point Mode to Create A New AC1200 WiFi Network