10 Best Xb8 Xfinity Modem of 2025

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

May 2026 Edition

Editor's 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

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. Save up to dollar 168/yr in equipment rental fees
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

NETGEAR

NETGEAR Nighthawk DOCSIS 3.1 Mid/high-Split Cable Modem (CM3000-1AZNAS) – Approved for Today’s Fastest Speeds - Works With all Cable Providers, Incl. Xfinity, Spectrum, Cox - Cable Plans up to 2.5Gbps

Main Highlights

Mid/high-split DOCSIS 3.1 cable modem delivers up to 2.5Gbps of download speeds and 1Gbps of upload speeds, works with your existing WiFi Router (separate unit)
Specifically engineered for todays fastest DOCSIS 3.1 cable internet speeds that can only be accessed with mid/high-split technology, such as Xfinitys 2Gbps download speeds and 200Mbps upload speeds. Works with all major US internet providers
Blazing-fast download speeds powers your digital lifestyle with enhanced speed, capacity, efficiency, and response times
Impressive 10x faster upload speeds delivers seamless multi-family gaming, video conferencing and uploading large filessimultaneously. Plus provides easy remote access to your home security cameras and NAS files
For the ultimate in performance, link a NETGEAR WiFi 6E or WiFi 7 router or Orbi system (separate existing product) to this CM3000 cable modem
Be ready for future Internet speeds with much higher performance levels
Save up to dollar 300 a year in ISP rental fees by owning this high-performance modem
Connect for multi-gig Internet speed by plugging your routers multi-gig Internet port directly into the modems 2.5Gig port. Or connect the two Gigabit ports to a router with link aggregation for up to 2Gbps
Made for use in the U.S. only

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9.5

ARRIS

ARRIS SURFboard SB8200 DOCSIS 3.1 Multi‑Gig Cable Modem | 2 -1Gbps Ethernet Ports | Works with Xfinity, Cox, Spectrum | For Cable Internet Plans up to 2Gbps | Modem Only, Router Required

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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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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9.0

SensAjkngkL

Wall Mount Bracket for Comcast XB8 Xfinity Modems, Space-Saving Holder, Secure Mounting Solution, Improves Airflow, Easy Install for Home & Office (White)

Main Highlights

SPACE-SAVING DESIGN: Keeps modem off desks/floors, freeing up valuable countertop, shelf or table space for a tidier area
ENHANCED AIRFLOW: Elevates modem to boost ventilation, preventing overheating and ensuring consistent, reliable performance
EASY INSTALLATION: Comes with multiple mounting hole options, fitting drywall, wood or concrete for flexible setup
CLUTTER-FREE SETUP: Helps organize cables neatly behind the mounted modem, reducing messy wire tangles
HOME & OFFICE READY: Blends seamlessly with residential and commercial decor, ideal for living rooms, offices or home workspaces

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8.8

Generic

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

Main Highlights

Perfectly fits XB8 modem. 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 PLA: Made of sturdy and reliable PLA, it provides long-term support for your modem in any environment.
Optimized Placement: Adjust the modem's position for better signal reception and easier cable access, while keeping cables organized.

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8.6

Generic

Wall Mount Bracket for Comcast,XB8,Xfinity Modems, Space-Saving Holder for Home & Office, Secure Mounting Solution (Black)

Main Highlights

Space-Saving DesignKeeps your modem off the desk or floor freeing up valuable counter or shelf space.
Improved AirflowElevates the modem to enhance ventilation and prevent overheating for consistent performance.
Easy InstallationIncludes multiple mounting hole options for flexible setup on drywall wood or concrete.
Clean & Organized SetupHelps reduce clutter by keeping cables neatly managed behind the mounted modem.
Home & Office ReadyPerfect for both residential and commercial use blending seamlessly.

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8.3

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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8.1

Generic

Wall Mount Bracket for Xfinity Gateway — Secure Flat-Back Mount for XB7/XB8 Gateways, Easy Insert & Cable Routing, Screw Install, Space-Saving Router Holder (for XB7)

Main Highlights

Flat-back, space-saving design Prints flat on the back so your gateway sits flush and tidy against the wall.
Made for XB7/XB8 gateways Engineered to accept for XB7/XB8 units with ports oriented toward the access side for reliable fit and service access.
Simple insert & secure support Slide the gateway into the bracket, spread support arms carefully and ensure ports line up; holds the unit firmly without blocking vents or ports.
Designed to preserve signal & access Keeps the gateway elevated and accessible for resets, while avoiding obstruction of antennas and ports.
Reversible & service-friendly Easily remove the gateway for service or relocation.

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8.1

ARRIS

ARRIS (SB8200-RB) - Cable Modem - Fast DOCSIS 3.1 32x8 Gigabit Cable Modem , Approved for Comcast Xfinity, Cox, Charter Spectrum, & more | 1 Gbps Max Internet Speed, 4 OFDM Channels - Renewed

Main Highlights

Approved for Cox, Spectrum and Xfinity internet along with other US cable internet providers. Is NOT compatible with ATT, CenturyLink, Verizon, Froniter or other Fiber Optic, DSL or Satellite internet service providers.
Does NOT include Wi-Fi and Does NOT support cable digital voice service.
The SURFboard SB8200 is compatible with major U.S. cable internet providers including Cox, Spectrum, Xfinity and others. It is approved for cable internet speed plans up to 1 Gbps. Check your cable ISP website to confirm compatibility.
32 downstream x 8 upstream DOCSIS 3.0 bonded channels, or 2 downstream x 2 upstream OFDM DOCSIS 3.1 channels.
Two 1-Gigabit Ethernet ports

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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

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. Save up to dollar 168/yr in equipment rental fees
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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