Cable modems look like very complicated parts of networking hardware. But they’re relatively straightforward at least when related to the variety and versatility of routers. That said you may still need a specific type of modem if you have an unusual internet connection. So if you’re still unsure about, which is the Best Cable Modems in 2021 then let’s find out.

10 Best Cable Modems 2021

1. Motorola MG7700 24x8 Cable Modem Plus AC1900 Dual Band WiFi Gigabit Router

$183.39  in stock
8 new from $183.39
Amazon
as of March 15, 2021 2:12 am

Features

  • Fast 24x8 DOCSIS 3.0 cable Modem Plus a built-in AC1900 Dual band (2.4GHz and 5GHz) Wi-Fi Gigabit Router with four Gigabit (GigE) Ethernet ports, power boost Wi-Fi amplifiers, firewall security, and more. The maximum modem speed is 1000 Mbps, supporting service speeds up to 650.
  • Eliminate up to $156 per year in cable Modem rental fees. (Savings are shown for Comcast Xfinity and vary by cable service provider.) certified by all leading cable service providers including Comcast Xfinity, Cox, Charter spectrum (no cable Modem is compatible with fiber optic, DSL, or satellite services, available from Verizon, AT&T, CenturyLink, Frontier, and others.)
  • Built-in high-speed router with AC1900 wireless and Power boost - Provides internet access for Wi-Fi devices including smartphones, notebooks, tablets, and more. 4 10/100/1000 Gigabit Ethernet LAN ports provide wired connections to Windows and Mac computers and other Ethernet-capable devices. A Broadcom cable Modem Chipset provides security from denial of service attacks.
  • Wireless power boost for better speed and range - Adds high-performance Wi-Fi power amplifiers to boost the wireless signals to the legal limit, giving a significant Boost in speed and range. In addition, anybeam Performing at both 2.4 GHz and 5 GHz frequencies focuses the signal on wireless clients to further enhance performance and range
  • Minimize shelf space and improve cooling - 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 looks great in any home or office. A 2-year warranty is the longest in the industry. Rugged Lightning and Power Surge circuits further protect your investment.

2. NETGEAR Nighthawk Cable Modem WiFi Router Combo C7000-Compatible

$209.99
$179.99  in stock
15 new from $163.99
29 used from $104.25
Free shipping
Amazon
as of March 15, 2021 2:12 am

Features

  • Save monthly rental fees: Model C7000 replaces your cable modem and Wi-Fi router, saving you up to $168/year in equipment rental fees.
  • Built for fast speed: best for cable provider plans up to 400 Mbps speed. Modem technology: Engineered with 24x8 channel bonding and DOCSIS 3.0.
  • Fast Wi-Fi performance: Get up to 1800 square feet 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.
  • Modem technology: Engineered with 32x8 channel bonding and DOCSIS 3.1.

3. NETGEAR Cable Modem CM400 - Compatible with all Cable Providers

$49.99
$38.99  in stock
6 new from $25.00
10 used from $9.46
Amazon
as of March 15, 2021 2:12 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 CM400 replaces your cable modem saving you up to $168/yr in equipment rental fees.
  • BUILT FOR SPEED: Best for cable provider plans up to 100 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.

4. TP-LINK Archer CR700 AC1750 Wireless Dual Band 16x4 DOCSIS 3.0 Cable Modem Router

$99.99
$83.99  in stock
6 new from $83.99
37 used from $49.58
Amazon
as of March 15, 2021 2:12 am

Features

  • Eliminate rental fee: eliminate your cable Modem monthly rental fee - up to $120 per year
  • Cable Modem router: item is cable Modem router and this will serve as both your cable Modem and Wi-Fi router
  • Industry leading support: 2-year warranty and free 24/7 technical support; J. D. Power Ranked TP-LINK "highest in customer satisfaction for wireless routers in 2017";great for cable internet plans up to 300Mbps with Infinity from Comcast, spectrum (including Charter, time Warner Cable, and bright house networks), Cox, Sudden link, Mediacom, and wow
  • Faster speed: up to 1750Mbps Wi-Fi speeds with simultaneous 2. 4GHz (up to 450Mbps) and 5GHz (up to 1300Mbps) bands; Channel bonding of up to 16 downstream and 4 upstream channels, up to 680Mbps download speeds
  • Increased Wi-Fi range: six internal antennas and high-powered amplifiers Boost signal strength and reduce interference

5. ARRIS SURFboard SB6121 4x4 DOCSIS 3.0 Cable Modem

$119.99
$17.89  in stock
5 new from $33.82
30 used from $14.77
Amazon
as of March 15, 2021 2:12 am

Features

  • Compatible with Time Warner Cable, Charter, Cox, Cablevision, and more
  • Not compatible with Verizon FiOS or AT&T U-verse, no longer approved by Comcast Xfinity
  • Requires Cable Iternet Service, if not sure your provider is CABLE call them to confirm
  • BROWN BOX models NOT VALID for this item when sold as New, should report to Amazon immediately and RETURN to Seller
  • Wired modem only, does NOT include WIFI Router or VOIP Telephone adapter. Gigabit Ethernet port to connect to computer or Router for fast downloads.

6. D-Link DOCSIS 3.0 Cable Modem (DCM-301) Compatible

$54.99  in stock
5 new from $99.99
2 used from $54.99
Free shipping
Amazon
as of March 15, 2021 2:12 am

Features

  • Compatible with Comcast Xfinity, Time Warner Cable, Charter, Cox, Cablevision, and more; Requires Cable Internet Service
  • Not compatible with: Verizon, AT&T, or CenturyLink
  • Cable Modem only (no WiFi router)
  • Integrated home services
  • Maximum downstream speeds: 30 Mbps (640QAM) / 43 Mbps (256QAM) / up to 320 Mbps through 8 channel bonding1; Maximum upstream speeds: 30 Mbps (TDMA) / 35 Mbps (SCDMA) / up to 160 Mbps1

7. MOTOROLA MG7550 16x4 Cable Modem Plus AC1900 Dual Band WiFi Gigabit Router

$219.99
$144.98  in stock
15 new from $137.83
5 used from $102.79
Free shipping
Amazon
as of March 15, 2021 2:12 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 firewall DFS, 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 Wi-Fi router with AC1900 Wi-Fi, and Power Boost, and DFS provides Internet access for Wi-Fi 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.

8. ARRIS SURFboard (32x8) Docsis 3.0 Cable Modem

$99.99
$76.27  in stock
11 new from $76.27
18 used from $43.00
Amazon
as of March 15, 2021 2:12 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.

9. NETGEAR Cable Modem CM500 - Compatible

$62.99
$50.99  in stock
11 new from $50.98
20 used from $38.99
Amazon
as of March 15, 2021 2:12 am

Features

  • 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.
  • Modem technology: Engineered with 16x4 channel bonding and DOCSIS 3.0.

10. NETGEAR Nighthawk Cable Modem WiFi Router Combo (C7800)

$359.99  in stock
7 new from $359.99
10 used from $258.58
Free shipping
Amazon
as of March 15, 2021 2:12 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 Wi-Fi router saving you up to $168/year in equipment rental fees.
  • Built for ultimate speed: best for cable provider plans up to 2 gigabits speed.
  • Fast Wi-Fi performance: Get up to 3000 square feet 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.