Approved Modems 2021
Approved Modems 2021

Find cable modems for your ISP. Easily search by Internet Provider, brand, type (WiFi, No WiFi, Voice). Curated lists include Comcast XFINITY modems, SuddenLink modems, and Cox modems.  An outdated modem can cause lag on the network and may hinder receiving your subscribed internet speed. ​​Some people report receiving speeds over their subscribed speed by upgrading their modem. ​

What Are Cable Modems?

Cable modems are needed to connect to cable providers’ Internet networks. They receive the Internet signal via a coax wire connected to the modem. Most cable companies strive to lease a modem so they can continuously charge an additional fee each month. However, you can buy your own to forgo this never-ending fee cycle. It’s actually an FCC law that each company allows you to buy your own cable modem.  Charter Communications was actually fined by the FCC a few years ago for preventing customers from using their own cable modems.

Different Types Of Cable Modems

  • Standard Cable Modem Without WiFi
  • A WiFI Modem
    • Modem Router Combo
    • Gateway
  • DOCSIS 3.1 Cable Modems
  • Voice Modems

Standard Cable Modem Without WiFi

Best Cable Modem
Standard Cable Modem

The NETGEAR CM500 is the best for Comcast XFINITY, Cox, Spectrum, and more. The CM500 is compatible with tiers up to 300 Mbps, including XFINITY Blast (200) and Extreme (300). The Netgear CM500 can be easily set up online with these 3 ISPs, meaning no call is needed. This modem has 16 download channels that provide faster surfing. Additionally, works well for all major ISPs.

WiFi Cable Modem / Modem Router Combo / Gateway

Motorola MG7540 WiFi Cable Modem
Motorola MG7540
Motorola MG7540 WiFi Modem

If you prefer a WiFi modem router combo (a.k.a. Gateway), the Motorola MG7540 is the perfect buy. It is approved by ​most cable companies including Atlantic Broadband, Cable One, Comcast XFINITY, Spectrum (Time Warner Cable, BHN, Charter), and more with plans up to 300 Mbps.​​

DOCSIS 3.1 Cable Modem

Netgear CM1000 DOCSIS 3.1 Cable Modem

This is the NETGEAR CM1000. A DOCSIS 3.1 cable modem is required for the XFINITY Gigabit  / XFINITY Gig service. It is also compatible with Cox Ultimate, WOW 300Mbps & over, Cable One GigaOne service, and more. Why It’s The Best – Compatible with speeds up to 1 Gbps which will cover services for at least the next ten years.

Before Buying New Cable Modems Checklist
  1. When buying a replacement modem, you should always buy a new one.  Used modems are too often returned because the provider cannot activate them. Most of the time the modem is registered to another provider or user and can’t be undone. Some used modems belong to cable companies and are reported as stolen often.
  2. Always buy from a reputable seller, such as directly from Amazon or authorized third-party sellers. This ensures that you will be able to register any equipment for warranties and/or replacements shall any issues arise.
  3. Be sure you are at least getting a DOCSIS 3.0 approved modem. This is the most widely used form of DOCSIS today. However, DOCSIS 3.1 is taking off. Most companies require a 3.0 or higher. Anything less will hinder the speed of your internet if the provider acknowledges it all.
  4. Be sure the cable modem can support the speed that you subscribe to from your ISP. If you are unsure of your speed tier, you can find this info on your bill. 
  5. Select a modem that has enough download channels to support the same speed. This is often a requirement from your provider. You will see this written most of the time as 32×8 (or different numbers), with the first number being download channels and the second upload channels. This is often referred to as channel bonding.
  6. Decide if you want a separate modem and router, one with a built-in router or an eMTA unit.

Top Cable Modems

  • Motorola MB8611 XFINITY / COX Gigabit Modem Review
    Recently, the Motorola MB8611 was released from Zoom under the Motorola brand name. It is compatible and approved for use with Comcast XFINITY and Cox. Furthermore, this cable modem will work with Gigabit plans and lower tiers. The MB8611 has an MSRP of $169.99. Jump To: MB8611 Product Features MB8611 Manuals & Guides In-Depth Review…
  • ARRIS SURFboard S33 Modem Details & Review
    The ARRIS SURFboard S33 is a sleeker design than all of the prior SURFboard modems. The S33 is a DOCSIS 3.1 cable modem capable of multi-gig speeds up to 3.5 Gbps. This is accomplished by using both of the Ethernet ports, one a 2.5 Gbps port and the other a 1 Gbps port. On This…
  • NETGEAR Nighthawk C7100V XFINITY Voice Modem Review
    NETGEAR Nighthawk C7100V Features Optional Battery Backup  – Sold separately – 5 to 8 hours of phone service during a power outage. Battery for C7100V on Amazon 24 x 8 Channel Bonding 2 Telephone Jacks  AC1900 WiFi Router Built-In 2 USB Ports Beamforming Technology – Reliable WiFi speeds and coverage Netgear Product Description The NETGEAR Nighthawk C7100V is…
  • Motorola MT7711 XFINITY Voice WiFi Modem Review
    ​​ ​The Motorola MT7711 is the newest WiFi cable modem with voice capabilities. It is currently only approved for Comcast Voice customers. ​The Motorola MT7711 provides for speeds up to 650Mbps. Also, it has a built-in AC1900 WiFi router with Power Boost and AnyBeam beamforming providing a longer range than most modem and router combos….
  • NETGEAR Orbi CBR750 / CBK752 WiFi Modem
    ​​ The new NETGEAR Orbi CBR750 / CBK752 has a WiFi 6 built-in router, also known as 802.11AX wireless.  WiFi 6 is the latest generation of in-home WiFi that is 4x faster than the most commonly used today, wireless AC. However, with Netgear leading the way with WiFi 6 cable modems and routers, 802.11AX will…
  • NETGEAR Nighthawk CM2000 DOCSIS 3.1 Cable Modem
    ​​ ​The NETGEAR Nighthawk CM2000 is one of the latest modems released by Netgear under the Nighthawk lineup. The CM2000 can support speeds up to 2.5 Gbps, which really future-proofs this modem. It is compatible with most cable companies including Comcast XFINITY residential and business, Cox, Sparklight (Cable One), Spectrum, and more.  . Netgear CM2000 DOCSIS 3.1 Key Features 2.5X Internet…
  • NETGEAR CM1000 DOCSIS 3.1 Cable Modem
    ​​ ​The Netgear CM1000 was the first DOCSIS 3.1 modem released. The CM1000 modem supports speeds up to 1 Gbps, though most households are far from that. However, this would be the last cable modem you’ll need for many years to come. It is compatible with most cable companies including Comcast XFINITY 1 Gig, Cox…
  • NETGEAR Nighthawk CM1150V XFINITY Voice Modem Review
    ​​ The NETGEAR Nighthawk CM1150V XFINITY Voice cable modem was made only for Comcast customers. ​The CM1150V provides for speeds up to 2 Gbps, making it future proof for many years to come. Also, it is backward compatible with DOCSIS 3.0. Furthermore, the Netgear CM1150V can support 2 separate phone lines and many calling features…
  • ARRIS SB8200 DOCSIS 3.1 Modem Details & Review
    ​​ From the ARRIS SURFboard lineup comes the first DOCSIS 3.1 cable modem, the ARRIS SB8200. If you subscribe to Gigabit services from Cox or Comcast XFINITY, then this may be the modem you need. It’ll definitely be the last cable modem you’ll need for years to come. The ARRIS SB8200 is backward compatible with…
  • Motorola MG8702 XFINITY 3.1 Modem Router Combo
    ​​ The latest release from Motorola in the line of cable modem router combos is the Motorola MG8702. As with most other new releases, the MG8702 is a DOCSIS 3.1 modem. It also features a built-in AC3200 WiFi Router. With that said, it will not feature the newest WiFi 6 (802.11AX) standard. Don’t get me wrong,…
  • ​​Motorola MG7550 WiFi Cable Modem
    ​​ The Motorola MG7550 is one of the latest released WiFi cable modems. It features 16 download channels and 4 up. This cable modem can deliver speeds up to 686 Mbps with a built-in AC1900 Wi-Fi Gigabit Router with Power Boost. The MG7550 is certified by a number of leading cable service providers including Comcast…
  • Motorola MG7540 WiFi Cable Modem Router
    ​​ The Motorola MG7540 features 16 x 4 channel bonding and has a built-in AC1600 WiFi router. This cable modem also has a firewall and the Broadcom cable modem chipset provides security from Denial of Service attacks. This is important because modems with the Intel Puma 6 chipset has caused problems for many. AnyBeam beamforming at both…

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