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

July 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
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

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

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

Zelfvrix

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

Main Highlights

Perfect Fit for XB8 ModemSpecifically designed for XB8 modem, ensuring a secure hold without blocking ports, signals, WiFi performance, or cable access.
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, ensuring consistent performance.
Easy InstallationIncludes screws and multiple mounting hole options for flexible setup on drywall, wood, or concrete surfaces.
Home & Office ReadyPerfect for both residential and commercial use, seamlessly blending into any home or office environment.

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Best Value

9.2

Save 59%

NETGEAR

Netgear Gigabit Cable Modem (32x8) DOCSIS 3.1 | for XFINITY by Comcast, Cox. Compatible with Gig-Speed from Xfinity - CM1000-1AZNAS (Renewed)

59% Off

Main Highlights

Compatible with all major cable internet providers with internet speed up to 1Gbps. Currently certified with Spectrum and Cox (up to 1Gbps), Xfinity (up to 800Mbps). Not compatible with Verizon, AT&T, CenturyLink, DSL providers, DirecTV, DISH and any bundled voice service
Model CM1000 replaces your cable modem saving you up to 168/year in equipment rental fees
Connect any WiFi router to this modem's Ethernet port to support all your wireless devices
1 Gigabit Ethernet port connects to your computer or separate WiFi router
Made for use in the US only

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9.0

Hitron

Hitron CODA56 DOCSIS 3.1 Cable Modem ONLY (NOT Fiber) | 2.5 Gbps | NO WiFi/Voice/Router | Single Ethernet Port | Xfinity/Spectrum/Cox Compatible | Requires Separate WiFi Router

Main Highlights

CABLE INTERNET ONLY - This modem works ONLY with cable internet providers (Xfinity, Spectrum, Cox). NOT compatible with fiber internet services including AT&T Fiber, Verizon Fios, Frontier Fiber, Google Fiber, or CenturyLink Fiber. Check with your ISP to confirm you have cable (coaxial) service before purchasing.
DATA ONLY - NO PHONE SERVICE - This modem does NOT support telephone or voice service of any kind. If your internet plan includes phone service or you need VoIP calling, you must purchase a separate voice-capable modem or VoIP adapter. This device handles internet data only.
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 CABLE providers: Xfinity (up to 2 Gbps), Spectrum (1 Gbps), Cox (2 Gbps). NOT compatible with fiber internet services. Verify your plan speed and provider compatibility.
MODEM ONLY - NO WIFI INCLUDED - This device is a cable modem with ONE Ethernet port only. It does NOT provide WiFi or wireless connectivity. You MUST connect your own separate WiFi router to this modem to create a wireless network. This is not an all-in-one gateway or combo unit.
DOCSIS 3.1 TECHNOLOGY: Latest cable standard with 32x8 channel bonding for reliable multi-gig speeds. Backward compatible with DOCSIS 3.0 networks. Eliminates monthly modem rental fees (typically $14-20/month). For CABLE internet only - verify compatibility with your cable provider.
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.
COMPATIBILITY CHECKLIST: Before buying, confirm: (1) You have cable internet (not fiber/DSL), (2) Your plan is 1+ Gbps, (3) You own or will buy a separate WiFi router, (4) Your ISP supports customer-owned modems.
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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8.8

Gaidas

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

Main Highlights

Heavy-Duty Metal Support: Built from thick, durable metal to hold your Xfinity XB8 or XB7 gateway securely, providing a sturdier alternative to flimsy plastic or 3D printed mounts
Built-in Cable Management: Integrated cable storage helps organize power cords and network cables, reducing clutter and creating a cleaner setup
Improved Signal Placement: Elevates your XB8 gateway off the desk and positions it on the wall for better airflow and more optimized signal distribution
Cable-Friendly Open Design: Open bottom and back areas allow power cords and network cables to route naturally without being pinched, bent, or crimped
Easy Installation: Comes with mounting hardware for quick and secure wall installation, suitable for home office and living room setups

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8.6

Save 7%

nzjqfw

Wall Mount Bracket Compatible with Xfinity Comcast XB8 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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8.3

Generic

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

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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8.1

Save 36%

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

36% Off

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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8.1

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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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
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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