There are many type of suddenlink compatible modem, you can check below list with features

ARRIS SURFboard SB6190 DOCSIS 3.0 Cable Modem, Approved for Cox, Spectrum, Xfinity & others (Black)

$79.96  in stock
9 new from $79.96
47 used from $50.52
Free shipping
Buy Now
Amazon.com
as of May 22, 2020 6:11 am

Features

  • Compatible with major U.S. Cable Internet Providers including Cox, Spectrum, Xfinity & others. Not compatible with ATT, Verizon, CenturyLink or other DSL or Fiber internet providers. Compatible with major U.S. Cable Internet Providers including Cox, Spectrum, Xfinity & others. Not compatible with ATT, Verizon, CenturyLink or other DSL or Fiber internet providers.
  • DOCSIS 3.0 Cable Modem best for cable internet speed plans up to 600 Mbps
  • 32 downstream x 8 upstream DOCSIS 3.0 bonded channels
  • 1 Gigabit Ethernet port for connecting to a Wi-Fi router or other device.
  • Cable internet service required. Does not inlcude Wi-Fi and does not support cable digital voice service.

ARRIS SURFboard SB6190 DOCSIS 3.0 Cable Modem, Approved for Cox, Spectrum, Xfinity & others (White)

$79.96  in stock
16 new from $70.00
18 used from $49.99
Free shipping
Buy Now
Amazon.com
as of May 22, 2020 6:11 am

Features

  • Compatible with major U.S. Cable Internet Providers including Cox, Spectrum, Xfinity & others. Not compatible with ATT, Verizon, CenturyLink or other DSL or Fiber internet providers. Compatible with major U.S. Cable Internet Providers including Cox, Spectrum, Xfinity & others. Not compatible with ATT, Verizon, CenturyLink or other DSL or Fiber internet providers.
  • DOCSIS 3.0 Cable Modem best for cable internet speed plans up to 600 Mbps
  • 32 downstream x 8 upstream DOCSIS 3.0 bonded channels
  • 1 Gigabit Ethernet port for connecting to a Wi-Fi router or other device.
  • Cable internet service required. Does not inlcude Wi-Fi and does not support cable digital voice service.

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
6 used from $91.26
Free shipping
Buy Now
Amazon.com
as of May 22, 2020 6:11 am

Features

  • 3 products in 1: DOCSIS 3.0 Cable Modem, AC1900 dual-band Wi-Fi Router, 4 Port Gigabit Ethernet Router (cable digital voice service not supported)
  • Compatible with major U.S. Cable Internet Providers including Cox, Spectrum, Xfinity & others. Cable internet service required. Not compatible with ATT, Verizon, CenturyLink or other DSL or Fiber internet providers
  • 16 downstream & 4 upstream DOCSIS 3.0 bonded channels. Best for cable internet service plans up to 300 Mbps. Cable internet service required
  • Wi-Fi 5 AC1900 dual-band concurrent Wi-Fi Router with 4 Gigabit Ethernet ports
  • Setup and manage your network with the SURFboard Manager app

MOTOROLA 24x8 Cable Modem, Model MB7621, DOCSIS 3.0. Approved by Comcast Xfinity, Cox, Charter Spectrum, Time Warner Cable, and More. Downloads 1,000 Mbps Maximum (No WiFi)

$109.99
$77.98  in stock
3 new from $77.98
Free shipping
Buy Now
Amazon.com
as of May 22, 2020 6:11 am

Features

  • Model MB7621 is recommended for actual cable Internet service speeds up to 650 Mbps. Wirecutter rates this “the best modem for most people.” A Full-Band Capture Digital Tuner ensures faster, more reliable Internet.
  • This cable modem's one Gigabit Ethernet port connects to a WiFi router, computer, HDTV, game station, or streaming video device. Great for use with Whole Home WiFi or Mesh networks like eero, Google WiFi, and Orbi. (This cable modem does not have a built-in wireless router or telephone call capability. The Motorola MG7315, MG7540, MG7550, and MG7700 have a built-in wireless router.)
  • Requires cable Internet service.Approved by and for use with Comcast Xfinity and Xfinity X1, Cox, Charter Spectrum, Time Warner Cable, BrightHouse, CableOne, SuddenLink, RCN, and other cable service providers. ELIMINATE CABLE MODEM RENTAL FEES UP TO 156 DOLLARS PER YEAR.(Savings are shown for Xfinity and vary by cable service provider. No cable modem is compatible with fiber optic, DSL, or satellite services from Verizon, AT&T, CenturyLink, Frontier, and others. Model MB7621 has no phone jack.)
  • Setup is fast and easy using the Quick Start guide. Experienced USA-based Motorola customer support specialists are happy to help if you need them. Support is in English or Spanish.
  • Attractive, compact design minimizes shelf space, improves cooling, and extends product life while looking great in any home or office. A two-year warranty plus rugged lightning and power surge circuits protect your investment. Includes phone and web support by friendly, professional USA-based technical support specialists.

NETGEAR Cable Modem CM700 - Compatible with all Cable Providers including Xfinity by Comcast, Spectrum, Cox | For Cable Plans Up to 500 Mbps | DOCSIS 3.0

$109.99
$99.99  in stock
6 new from $99.98
10 used from $48.00
Free shipping
Buy Now
Amazon.com
as of May 22, 2020 6:11 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 CM700 replaces your cable modem saving you up to $168/yr in equipment rental fees.
  • BUILT FOR SUPER-FAST SPEED: Best for cable provider plans up to 500 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 SB6190-RB DOCSIS 3.0 Cable Modem - (Renewed) - White

$49.99
$39.99  in stock
2 new from $39.99
Buy Now
Amazon.com
as of May 22, 2020 6:11 am

Features

  • Requires cable internet service. Compatible with major U.S. Cable Providers like Xfinity, Spectrum, Cox, Suddenlink, Mediacom, etc. Not compatible with ATT, Verizon or CenturyLink.
  • 32 DOWNLOAD & 8 UPLOAD channels to future proof your modem as your Cable ISP enhances service offerings. Recommended for plans of 300 Mbps and above
  • Supports IPv4 and IPv6 – the latest Internet standard
  • 90 Day Warranty. ARRIS Certified Refurbished. US Technical support

MOTOROLA 16x4 Cable Modem, White Model MB7420, 686 Mbps DOCSIS 3.0

$58.99  in stock
2 new from $58.99
1 used from $58.99
Free shipping
Buy Now
Amazon.com
as of May 22, 2020 6:11 am

Features

  • Recommended for actual cable Internet service speeds up to 375 Mbps. A Full-Band Capture Digital Tuner ensures faster, more reliable Internet.
  • This cable modem's one Gigabit Ethernet port connects to a WiFi router, computer, HDTV, game station, or streaming video device. (This cable modem does not have a built-in wireless router or telephone call capability. The Motorola MG7310, MG7315, MG7550, and MG7700 have a built-in wireless router.)
  • Requires cable Internet service. Approved by and for use with Comcast Xfinity and Xfinity X1, Cox, Charter Spectrum, Time Warner Cable, BrightHouse, WOW!, CableOne, SuddenLink, RCN, and other cable service providers. ELIMINATE CABLE MODEM RENTAL FEES UP TO 156 DOLLARS PER YEAR. (Savings are shown for Xfinity and vary by cable service provider. No cable modem is compatible with fiber optic, DSL, or satellite services from Verizon, AT&T, CenturyLink, and others. Model MB7420 has no phone jack.)
  • Setup is fast and easy using the Quick Start guide. Experienced USA-based Motorola customer support specialists are happy to help if you need them. Support is in English or Spanish.
  • Attractive, compact design minimizes shelf space, improves cooling, and extends product life while looking great in any home or office. A two-year warranty plus rugged lightning and power surge circuits protect your investment. Includes phone and web support by friendly, professional USA-based technical support specialists. Phone support is provided in English and Spanish.

MOTOROLA MG7550 16x4 Cable Modem Plus AC1900 Dual Band WiFi Gigabit Router with Power Boost and DFS, 686 Mbps Maximum DOCSIS 3.0 - Approved by Comcast Xfinity, Cox, Charter Spectrum, More (Black)

$219.99
$149.99  in stock
6 new from $149.99
8 used from $131.99
Free shipping
Buy Now
Amazon.com
as of May 22, 2020 6:11 am

Features

  • 16x4 DOCSIS 3.0 cable modem plus a built-in AC1900 Dual Band (2.4 GHz and 5 GHz) WiFi Gigabit Router with four Gigabit (GigE) Ethernet ports, a firewallDFS, Power Boost, and more. This product is recommended for actual cable Internet service speeds up to 375 Mbps. A Broadcom cable modem chipset provides security from Denial of Service attacks. WiFi performance is exceptionally good, even in multi-dwelling units with lots of WiFi noise from neighbors. DFS and Power Boost are key
  • Requires cable Internet service. Approved by and for use with Comcast Xfinity and Xfinity X1, Cox, Charter Spectrum, Time Warner Cable, Suddenlink, WOW!, CableOne and other cable service providers. ELIMINATE CABLE MODEM RENTAL FEES UP TO 156 DOLLARS PER YEAR. (Savings are shown for Xfinity and vary by cable service provider. No cable modem is compatible with fiber optic, DSL, or satellite services from Verizon, AT&T, CenturyLink, Frontier, and others. Model MG7550 has no phone jack.)
  • Built-in high-speed WiFi router with AC1900 WiFi, and Power Boost, and DFS provides Internet access for WiFi devices including smartphones, notebooks, tablets, game stations, HDTVs, Amazon Echo, Google Home, Chromecast, Roku, Amazon Fire TV, and AppleTV. Four 10/100/1000 Gigabit Ethernet LAN ports provide wired connections to Windows and Mac computers, HDTVs, game stations, streaming TV devices, and other Ethernet-capable devices.
  • Wireless Power Boost adds high-performance WiFi power amplifiers to boost the wireless signals to the legal limit, giving a significant boost in speed and range. The router can work on WiFi DFS frequencies, unlike most routers, so it is much less vulnerable to WiFi interference from neighbors. In addition, AnyBeam beamforming at both 2.4 GHz and 5 GHz frequencies focuses the signal on wireless clients to further enhance performance and range.
  • Integrating the cable modem and router creates a reliable connection that reduces unwieldy wiring and power adapter clutter while conserving desk space. The vertical design minimizes shelf space and improves cooling while looking great in any home or office. A two-year warranty plus rugged lightning and power surge circuits protect your investment. Includes phone and web support by friendly, professional USA-based technical support specialists. Phone support is provided in English and Spanish.

(Renewed) NETGEAR C3700-100NAR C3700-NAR DOCSIS 3.0 WiFi Cable Modem Router with N600 8x4 Download speeds for Xfinity from Comcast, Spectrum, Cox, Cablevision

$94.69  in stock

1 used from $94.69
Buy Now
Amazon.com
as of May 22, 2020 6:11 am

Features

  • DOCSIS 3.0 cable modem unleashes 8x faster download speeds up to 340 Mbps faster, smoother WiFi, and works with all major cable Internet providers (Not Compatible with Cable Bundled Voice Services).
  • Certified to work with Cable Internet Providers like XFINITY from Comcast, Time Warner Cable, Cox, Cablevision, Bright House Networks, & More (Not Compatible with Cable Bundled Voice Services).
  • 8x4 channel bonding with Gigabit Ethernet Ports for fast wired, connections USB port to wirelessly share your hard drive.
  • Double firewall protection (SPI and NAT firewall).

TP-LINK Archer CR700 AC1750 Wireless Dual Band 16x4 DOCSIS 3.0 Cable Modem Router, Up to 680Mbps Mbps Download Data Rates, Certified for Comcast, Time Warner, Cablevision and Bright House

$79.99  in stock
23 new from $79.99
3 used from $73.59
Free shipping
Buy Now
Amazon.com
as of May 22, 2020 6:11 am

Features

  • Certified for XFINITY from Comcast,Time Warner, Cablevision, and Bright House(certification with Cox, Charter and WOW are still in process)
  • Class-leading 680Mbps DOCSIS 3.0 cable download speeds, 16x faster than DOCSIS 2.0
  • Channel bonding of up to 16 downstream and 4 upstream channels
  • 1750Mbps Wi-Fi speeds with simultaneous 2.4GHz (450Mbps) and 5GHz (1300Mbps) bands
  • Six internal antennas and high-powered amplifiers boost signal strength and reduce interference Beamforming technology delivers a more targeted and highly efficient wireless connection Dual-core processor ensures no interruption when simultaneously