Feature(may vary by option.)

●Top Internet Speeds for all Multi-gigabit Speed Tiers - Wirecutter recommends this model as the best cable modem for people using Gigabit Internet plans. Built-in DOCSIS 3.1 and DOCSIS 3.0 32x8 capabilities give top Internet speeds for all cable Internet services.
●Save Money - Eliminate up to 168 dollars per year in cable modem rental fees (Savings are shown for Comcast Xfinity and vary by cable service provider.) Approved by Comcast Xfinity and Xfinity X1, Cox, and CableOne for all speeds including Comcast Gigabit services and Cox Gigablast. Not compatible with RCN. No cable modem is compatible with fiber optic, DSL, or satellite services, available from Verizon, AT&T, CenturyLink, Frontier, and others.)
●Flexible Compatibility - Pair with any Wi-Fi router you’d like, including Whole Home Wi-Fi or Mesh routers like eero, Google Wi-Fi, and Orbi. A 10/100/1000 Gigabit Ethernet port allows connection of any SINGLE device with an Ethernet port including a router, Windows or Mac computer, HDTV, or game station. This cable modem does not have a built-in wireless router or telephone call capability.
●Proactive Network Security - A broadcom chipset provides advanced security from denial-of service attacks.
●Active Queue Management (AQM) - AQM significantly reduces Internet latency on both DOCSIS 3.1 and 3.0 services, resulting in faster page loads for all Web traffic and enhanced interactive applications like online gaming and video conferencing. The MB8600 also includes a full-band capture digital tuner to enhance speed and save energy.

[DOCSIS 3.1 (2.5 Gbps Ethernet Port)]




[DOCSIS 3.0 (1 Gbps Ethernet Port)]




[DOCSIS 3.1 (1 Gbps Ethernet Port)]





Description

No modem rental fees. Ultra-fast, reliable Internet.No modem rental fees. Ultra-fast, reliable Internet.
Family using Internet connected devices.Family using Internet connected devices.

The smart choice for your cable Internet service

Eliminate monthly cable modem rental fees – Typically saves 156 dollars per year in Xfinity cable modem rental fees. Actual savings depend on your service provider.

1,000+ Mbps – Maximum actual Internet download speed

GigE Ethernet port – For a high-speed wired connection to any router, computer, or other Internet-capable device.

MB8600 cable modem shown with a WiFi routerMB8600 cable modem shown with a WiFi router

Connect any WiFi router you choose

Plugs easily into any router for shared Internet access by all your WiFi and Ethernet-capable devices. This flexible approach lets you pair this cable modem with any router you choose for your WiFi needs, including a mesh router or gaming router.

If the MB8600’s Ethernet port isn’t used for a router, it can plug into a computer, HDTV, game station, or other Ethernet device.

Certified by Xfinity and CoxCertified by Xfinity and Cox

Recommended for Comcast Internet speeds up to 1,000 Mbps.Recommended for Comcast Internet speeds up to 1,000 Mbps.

Easy setup with just 3 connections: power, coax cable, and Ethernet.Easy setup with just 3 connections: power, coax cable, and Ethernet.

Compatible with Most Cable Providers

Certified by Comcast Xfinity, Cox, and other cable providers.*†

* Not compatible with Verizon, AT&T, CenturyLink, and other fiber optic, satellite, or DSL services.

† This cable modem does not have telephone jacks for the support of voice calls.

Ultra-Fast Internet Speed

For other service providers, supported service speeds are similar to Comcast.

Easy Setup

Connects fast with just 3 connections – power, coax cable, and Ethernet.

MB7420 product image MB7621 product image MB8600 product image mb8611
MB7420 MB7621 MB8600 MB8611
See Details
Customer Reviews
4.4 out of 5 stars
6,321
4.4 out of 5 stars
28,995
4.4 out of 5 stars
28,995
4.4 out of 5 stars
28,995
Price $30.89 $125.15 $209.99 —
Product Type (This table only includes cable modems with NO built-in WiFi router) 16x4 Cable Modem 24x8 Cable Modem DOCSIS 3.1 plus 32x8 3.0 Cable Modem DOCSIS 3.1 plus 32x8 3.0 Cable Modem
DOCSIS Channel Bonding 16x4 DOCSIS 3.0 24x8 DOCSIS 3.0 DOCSIS 3.1 plus 32x8 DOCSIS 3.0 DOCSIS 3.1 plus 32x8 DOCSIS 3.0
Certified for These Cable Internet Services. Typically Works with Many Others. Comcast Xfinity, Cox, Spectrum, Suddenlink, Sparklight (CableOne) Comcast Xfinity, Cox, Spectrum, Suddenlink, Sparklight (CableOne) Comcast Xfinity, Cox Comcast Xfinity and Cox
Recommended by Comcast Xfinity for Internet Service This Speed Tier or Below 300 Mbps 600 Mbps 1000 Mbps 1000 Mbps
Maximum Internet Download Speed (Actual speeds are lower) 686 Mbps 1000+ Mbps 6000 Mbps 1 Gbps
Built-in WiFi Router No No No No
Built-in Telephone Port No No No No
Works With Any WiFi Router That Has an Ethernet WAN port ✓ ✓ ✓ ✓
2.5G Ethernet Port ✓