10 Best Xb8 Xfinity Modem of 2026

Tested and Reviewed: Top 10 Xb8 Xfinity Modem deals with expert ratings from 8.1 to a perfect 10

September 2026 Edition

Editor's Choice

9.7

Save 14%

NETGEAR

NETGEAR Nighthawk Modem Router Combo (CAX30) DOCSIS 3.1 Cable Modem and WiFi 6 Router - AX2700 2.7 Gbps - Compatible with Xfinity, Spectrum, Cox, and More - Gigabit Wireless Internet

14% Off

Editor's bottom line:

“This xb8 xfinity modem is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Compatible with major cable internet providers including Xfinity, Spectrum, Cox and more. NOT compatible with Verizon, AT and T, CenturyLink, DSL providers, DirecTV, DISH and any bundled voice service.
Coverage up to 2,000 sq. ft. and 25 concurrent devices with dual-band WiFi 6 (AX2700) speed
4 X 1 Gig Ethernet ports (supports port aggregation) and 1 USB 3.0 port for computers, game consoles, streaming players, storage drive, and other wired devices
Replaces your cable modem and WiFi router
DOCSIS 3.1 and 32x8 channel bonding
NETGEAR Armor provides a powerful suite of tools to help keep you safe online, including enhanced protection against hackers, malware and identity theft, at home or on the go. Includes 30-day trial
NETGEAR devices come with security measures built in as well as enhanced safety features and updates designed to help protect you and your family
Easily set up and manage your WiFi with the Nighthawk app

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Picked by 397 people today

9.5

Save 20%

LXLO

Wall Mount Bracket for XB8 Xfinity Comcast Modems, Space-Saving Router Shelf with Easy Installation and Durable PLA for Secure and Organized Home Office Setup

20% Off

Main Highlights

Perfectly fits for Xfinity XB8 modem: Designed specifically for Xfinity XB8 model, ensuring a secure and stable fit without blocking signals or ports.
Durable PLA: Made of sturdy and reliable PLA, it provides long-term support for your modem in any environment.
Easy installation: Simple steps let you securely attach the bracket to the wall without specialized tools.
Space-Saving Design: Free up desk or shelf space by wall-mounting your modem, creating a cleaner and more organized area.
Optimized Modem Placement: Adjust the modems position for better signal reception and easier cable access, while keeping cables organized.

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9.5

Gaidas

Wall Mount Compatible with Xfinity XB8 & XB7 Gateway, Metal Cable Holder

Main Highlights

Heavy-Duty Metal Support: Built from sturdy metal to securely support Xfinity XB8 and XB7 gateways, offering a solid and reliable wall-mounted setup
Front-Facing Gateway Design: Positions the gateway facing outward so the small status LED on top is easier to see and check during daily use
Built-In Cable Management: Rear cable support helps organize power and network cables while reducing loose cords and accidental disconnections
Open Design for Airflow: Open bottom and back areas allow ventilation around the gateway while giving cables room to route without sharp bends
Easy Wall Installation: Includes mounting hardware for a secure installation that keeps your gateway off desks, shelves, and other crowded surfaces

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9.2

3TVol

Modem Wall Mount Fit for Xfinity Comcast XB8 Router WiFi – White Wall Mount Bracket, Improves Airflow Space-Saving Holder for Home Office, Secure Mounting Solution, Organized Setup, Easy to Install

Main Highlights

Perfect Fit for the XB8 Modem: Specifically designed to perfectly fit for the XB8 modem, ensuring a secure and stable hold without blocking ports, signals, router WiFi performance, or cable accessan ideal space-saving solution for optimized placement.
Space-Saving Design: Keeps modem off desks or floors, freeing up valuable countertop, shelf, or table space to create a cleaner, more organized area in any home or office environment.
Improve Airflow: Elevates the modem to improve ventilation, prevent overheating, and ensure consistent, reliable performance for everyday residential and commercial use.
Easy to install: Simple installation steps with multiple mounting hole options allow flexible setup on drywall, wood, or concreteno specialized tools required for secure attachment.
Durable & Clutter-Free Setup: Made of sturdy PLA for long-term support, this bracket helps neatly manage and organize cables behind the mounted modem, reducing messy wire tangles while blending seamlessly with living rooms, offices, and home workspaces.

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Best Value

9.0

Save 43%

NETGEAR

NETGEAR Nighthawk Cable Modem and WiFi 5 Router Combo (C7000) - Compatible with Major Cable Providers incl. Xfinity & Cox - Cable Plans up to 800Mbps - AC1900 (Up to 1.9Gbps) - DOCSIS 3.0

43% Off

Main Highlights

TWO-IN-ONE DOCSIS 3.0 MODEM ROUTER: Combines your modem and router into one device. Simply connect to your coaxial cable outlet to set up. Not compatible with fiber, DSL, satellite, or bundled voice services from cable providers. For US cable internet only.
AC1900 WIFI 5 SPEED FOR STREAMING, GAMING, AND YOUR WHOLE HOME: Up to 1.9Gbps combined across 2.4GHz and 5GHz bands for fast, reliable speeds even during peak hours. Beamforming+ boosts range and reduces dead spots to keep every device connected throughout your home. Real-world speeds depend on your connected devices and internet plan.
CERTIFIED WITH XFINITY AND COX FOR FAST, RELIABLE CABLE INTERNET: Works with Xfinity internet plans up to 800Mbps and Cox plans up to 500Mbps. Not compatible with Verizon, AT&T, CenturyLink, DirecTV, DISH, or bundled voice plans. ISP activation required after setup.
WIRED AND WIRELESS CONNECTIONS FOR EVERY DEVICE IN YOUR HOME: Four Gigabit Ethernet LAN ports deliver fast, reliable wired connections for computers, gaming consoles, streaming players, and storage drives. One USB 2.0 port for additional device connectivity.
SET UP AND MANAGE YOUR NETWORK WITH THE FREE NIGHTHAWK APP: Download the Nighthawk app on iOS or Android to get connected quickly, run speed tests, pause the internet on any device, manage connected devices, and control your network from anywhere. Browser-based setup also available.
YOUR SECURITY AND PRIVACY ARE OUR TOP PRIORITY: Built-in WPA/WPA2 encryption, double firewall protection, and denial-of-service attack prevention keep your network protected. Automatic firmware updates keep your network up to date without any manual steps.
NETGEAR ARMOR SECURITY (30-DAY FREE TRIAL): NETGEAR Armor provides a powerful suite of tools to help keep you safe online, including enhanced protection against hackers, malware and identity theft, at home or on the go. Separate subscription required.

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8.8

Generic

Wall Router Shelf for Xfinity Xb8, Concealed Rear Cable Management, Space-Saving Router Mount, Prevent Accidental Tipping, Made Using 3D-Printed Petg Material, Ideal Gift for Family (White)

Main Highlights

Modem Wall Mount for Xfinity XB8: Transform your connectivity with our Router Shelf designed specifically as a modem wall mount to securely hold your wifi router while enhancing your home's aesthetics
Concealed Rear Cable Management: Keep your space organized with our innovative cable hider box integrated into the router shelf, effectively hiding tangled cords and messy wires for a clutter-free environment
Space-Saving Router Wall Mount: This router wall mount optimizes small living areas by elevating your wifi box off surfaces, allowing you to maximize valuable space in your home or office
Sturdy 3D-Printed PETG Construction: Built with durable materials, our router stand ensures stability and prevents accidental tipping, making it a reliable choice for your wifi router storage cabinet
Ideal Gift for Family: Looking for a practical gift? Our wifi router storage box is ideal for family members who value organization and modern design

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8.6

Hitron

Hitron CODA56 Cable Internet Modem ONLY - DOCSIS 3.1 | 2.5 Gbps | NO WiFi - Requires Router | Xfinity/Spectrum/Cox Compatible | NOT for Fiber/DSL

Main Highlights

CABLE INTERNET ONLY - NOT COMPATIBLE WITH: Fiber (Verizon FiOS, AT&T), DSL, Satellite, or Fixed Wireless. ONLY works with cable providers like Xfinity, Spectrum, Cox. Verify your internet type BEFORE purchase.
NO WiFi INCLUDED - ROUTER REQUIRED: This is a modem ONLY. You MUST buy a separate WiFi router to get wireless internet. Without a router, only ONE device can connect via Ethernet cable. This does NOT replace your current WiFi router.
CABLE INTERNET REQUIRED: Works EXCLUSIVELY with cable internet service (DOCSIS) from providers like Xfinity, Spectrum, or Cox. Will NOT work with fiber (Verizon FiOS, AT&T), DSL, satellite, or fixed wireless internet. Contact your ISP to confirm compatibility BEFORE purchasing.
MULTI-GIG PERFORMANCE: Supports internet plans up to 2.5 Gbps with 2.5 Gbps Ethernet port. Designed for plans 1 Gbps and faster from certified providers: Xfinity (up to 2.33 Gbps), Spectrum (1 Gbps), Cox (2 Gbps). Verify your plan speed and provider compatibility.
SETUP REQUIREMENTS: You need: (1) Cable internet service, (2) Separate WiFi router with 2.5 Gbps port for full speeds, (3) ISP activation. This modem cannot create WiFi networks or connect multiple devices without additional equipment.
GAMING & STREAMING OPTIMIZED: DOCSIS 3.1 technology with low latency for smooth 4K streaming, gaming, and video calls. Backward compatible with DOCSIS 3.0 networks.
POTENTIAL SAVINGS: May eliminate monthly modem rental fees (check current rates with your provider). 30+ years Hitron expertise with 7-day technical support and warranty coverage.
BEFORE PURCHASING: (1) Confirm you have CABLE internet service, (2) Check your internet speed plan is 1+ Gbps, (3) Ensure you own or will purchase a WiFi router
WILL NOT WORK WITH: Verizon FiOS, AT&T Fiber, CenturyLink DSL, Satellite Internet (HughesNet, Viasat), T-Mobile/Verizon Home Internet
TRUSTED BRAND + SUPPORT: 30+ years of networking expertise with technical support 7 days per week, warranty coverage, and easy product registration.

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8.3

Save 12%

ARRIS

ARRIS SURFboard SB8200 DOCSIS 3.1 Cable Modem | Up to 1 Gbps Plans

12% Off

Main Highlights

MultiGig speed for today & tomorrow: DOCSIS 3.1 performance supports cable internet plans up to 2 Gbps, delivering ultrafast streaming, gaming, and downloads.
Save on rental fees: Own your modem and avoid monthly equipment chargescheck with your cable provider for plan compatibility.
Compact, modern design: Spacesaving footprint with discrete LED indicators for power, upstream/downstream, and online status.
Easy setup: Connect cable, power on, and activate with your cable provider. Then connect a WiFi router to the Ethernet port for home Wi-Fi coverage.
Modem only: This cable modem requires a separate Wi-Fi router or mesh system for home Wi-Fi network.
Fast Ethernet: Provides two 1 Gigabit Ethernet ports to support connecting to Wi-Fi routers.
Provider compatibility: All SURFboard modems are CableLabs certified to work across major US Internet Service Providers. Tested and qualifiedfor use with Cox, Xfinity, and Spectrum.Check with your provider to confirmdevice modelsupport.
Not compatible with fiber, DSL, or satellite services.

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8.1

Save 7%

Generic

Wall Mount Bracket Compatible with Xfinity Comcast XB8、XB7 Modems, Space-Saving Router Shelf for Secure and Organized Home Office Setup

7% Off

Main Highlights

Custom Fit Design: Designed specifically for XB8 model, ensuring a secure and stable fit without blocking signals or ports
Space-Saving Solution: Free up desk or shelf space by wall-mounting your modem, creating a cleaner and more organized area
Easy Installation: Simple installation steps allow you to securely attach the bracket to the wall without specialized tools
Durable PETG Construction: Made of sturdy and reliable PLA, it provides long-term support for your modem in any environment
Third-Party Compatibility Notice: This is a third-party replacement part, Brand names are used only to indicate Compatible with Xfinity Comcast, This product is not affiliated with or endorsed by any brand owner
Adjustable Positioning: Adjust the modem's position for better signal reception and easier cable access, while keeping cables organized
Secure Mounting System: Provides stable wall attachment that keeps your modem safely mounted and prevents accidental falls or damage

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8.1

Save 10%

NETGEAR

NETGEAR Nighthawk CM3000 DOCSIS 3.1 Cable Modem for Xfinity, Cox & Spectrum

10% Off

Main Highlights

FASTEST DOCSIS 3.1 SPEEDS WITH MID/HIGH-SPLIT: Revolutionary mid/high-split technology delivers up to 2.5Gbps download and 1Gbps upload, unlocking your provider's fastest tiers such as Xfinity Gigabit+ and its faster upstream, far beyond what standard cable modems reach.
STRONG PERFORMANCE ON XFINITY, SPECTRUM & COX: Works with all major U.S. cable internet providers and is backward compatible with DOCSIS 3.0. Cable internet only, not for DSL, fiber, or bundled cable-voice plans.
QUICK SETUP, ROCK-SOLID CONNECTION: Get online in minutes and enjoy stable, low-latency performance for gaming, 4K streaming and video calls, powered by DOCSIS 3.1 Active Queue Management and OFDMA.
MULTI-GIG PORTS WITH LINK AGGREGATION: One 2.5Gbps Ethernet port for multi-gig plans, plus two 1Gbps ports with link aggregation for up to 2Gbps wired, the most connectivity in its class.
SAVE UP TO $300 A YEAR, MODEM ONLY: Buy your own high-performance cable modem instead of renting and cut monthly ISP fees. No built-in WiFi, so pair with a NETGEAR Nighthawk WiFi 6E/7 router or Orbi system for whole-home coverage.

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Our Best Overall Choice

Best Choice

9.7

NETGEAR

NETGEAR Nighthawk Modem Router Combo (CAX30) DOCSIS 3.1 Cable Modem and WiFi 6 Router - AX2700 2.7 Gbps - Compatible with Xfinity, Spectrum, Cox, and More - Gigabit Wireless Internet

14% Off

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Compatible with major cable internet providers including Xfinity, Spectrum, Cox and more. NOT compatible with Verizon, AT and T, CenturyLink, DSL providers, DirecTV, DISH and any bundled voice service.
Coverage up to 2,000 sq. ft. and 25 concurrent devices with dual-band WiFi 6 (AX2700) speed
4 X 1 Gig Ethernet ports (supports port aggregation) and 1 USB 3.0 port for computers, game consoles, streaming players, storage drive, and other wired devices
Replaces your cable modem and WiFi router
DOCSIS 3.1 and 32x8 channel bonding
NETGEAR Armor provides a powerful suite of tools to help keep you safe online, including enhanced protection against hackers, malware and identity theft, at home or on the go. Includes 30-day trial
NETGEAR devices come with security measures built in as well as enhanced safety features and updates designed to help protect you and your family
Easily set up and manage your WiFi with the Nighthawk app

Show Price

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