10 Best Cox Panoramic WiFi Modems to Boost Your Home Internet

Are you a Cox internet customer looking to ditch those pesky monthly rental fees and upgrade your home network’s performance? You’ve landed in the right place! While Cox provides its own Panoramic WiFi gateway, owning your modem often means better control, enhanced features, and significant long-term savings. Finding the best Cox Panoramic WiFi modem can be a game-changer, improving your streaming, gaming, and overall online experience.

Choosing the right cable modem or modem-router combo for Cox isn’t just about saving money; it’s about unlocking your internet plan’s full potential. With advancements like DOCSIS 3.1 and WiFi 6, you can experience multi-gigabit speeds and wider, more reliable wireless coverage. But with so many options out there, how do you pick the perfect one?

We’ve scoured the market to bring you a comprehensive review of the top 10 best Cox Panoramic WiFi modem and modem-router combos. We’ll break down their features, highlight what makes them special, and give you the lowdown on user impressions to help you make an informed decision. Let’s dive in!

How to Choose the Best Cox Panoramic WiFi Modem

Before we get to the reviews, here are a few things to consider:

• Modem Only vs. Modem-Router Combo: A modem only provides internet access to a single device (usually a router), while a combo unit combines both the modem and a WiFi router into one device. Combos are convenient but may limit flexibility.
• DOCSIS 3.1 vs. DOCSIS 3.0: DOCSIS 3.1 is the latest standard, supporting multi-gigabit speeds and offering superior performance for high-speed internet plans (1 Gbps and above). DOCSIS 3.0 is suitable for slower to mid-range plans (up to 800 Mbps).
• WiFi Standards (WiFi 5/AC vs. WiFi 6/AX): WiFi 6 (802.11ax) offers faster speeds, better efficiency, and improved performance in congested network environments compared to older WiFi 5 (802.11ac).
• Speed Compatibility: Always check that the modem supports your current (and potential future) Cox internet plan speed.
• ISP Compatibility: While all listed here are Cox-compatible, it’s always good to double-check with Cox’s official approved modem list for the latest information.

Now, let’s look at our top picks!

NETGEAR Nighthawk Modem Router Combo (CAX30) DOCSIS 3.1…

This NETGEAR Nighthawk combo unit is a true powerhouse, blending a high-speed DOCSIS 3.1 cable modem with a robust WiFi 6 router. Designed for homes with demanding internet needs, it’s perfect for Cox users looking to maximize their bandwidth for 4K streaming, intense online gaming, and connecting numerous smart devices. Its Nighthawk app makes setup a breeze, putting powerful network management right at your fingertips.

• Key Features:

  • Compatible with major cable internet providers including Xfinity, Spectrum, Cox (NOT Verizon, AT&T, CenturyLink, DSL, DirecTV, DISH, or bundled voice services).
  • Best for cable provider plans up to 2Gbps.
  • Coverage up to 2,000 sq. ft. and 25 concurrent devices with dual-band WiFi 6 (AX2700) speed (up to 2.7Gbps).
  • 4 x 1 Gig Ethernet ports (supports port aggregation) and 1 USB 3.0 port.
  • Replaces your cable modem and WiFi router, saving up to $168/yr in equipment rental fees.
  • DOCSIS 3.1 and 32×8 channel bonding.
  • NETGEAR Armor provides a powerful suite of security tools (includes 30-day trial).
  • Easily set up and manage WiFi with the Nighthawk app.

• Pros:

  • Excellent performance for multi-gig internet plans.
  • Integrated WiFi 6 provides wide coverage and handles many devices.
  • Built-in security features with NETGEAR Armor.
  • Easy setup and management via Nighthawk app.
  • Significant rental fee savings.

• Cons:

  • Higher upfront cost than modem-only units.
  • Security suite requires a subscription after the trial.

• User Impressions: Users rave about the CAX30’s speed and reliability, especially for high-bandwidth activities. Many appreciate the seamless setup and the ability to replace two devices with one, streamlining their home network.
  See it on Amazon Here

Arris (G18) – Cable Modem Router Combo – Fast DOCSIS…

The Arris G18 combo unit brings a blend of speed and reliability that Arris is known for, making it a strong contender for the best Cox Panoramic WiFi modem replacement. Leveraging advanced DOCSIS 3.1 technology and robust Wi-Fi 6, it’s built to handle today’s demanding internet usage, from heavy streaming to competitive gaming, ensuring a smooth and fast connection across your entire home.

• Key Features:

  • Fast, Reliable Connection: Trusted brand used in over 260 million homes.
  • Advanced Modem Tech: Uses DOCSIS 3.1 for faster speeds, better security, and smoother gaming.
  • Strong Wi-Fi 6 Coverage: Dual-band Wi-Fi 6 delivers faster, wider wireless performance for your whole home.
  • Service Compatibility: Works with major ISPs like Xfinity, Spectrum, and Cox.
  • Save on Fees: Own your modem and avoid up to $168/year in rental charges.

• Pros:

  • DOCSIS 3.1 and Wi-Fi 6 for cutting-edge performance.
  • Reliable connectivity from a reputable brand.
  • Excellent for high-speed internet plans.
  • Combines modem and router, simplifying setup.

• Cons:

  • May be overkill for slower internet plans.
  • Advanced users might prefer separate modem/router for more customization.

• User Impressions: Customers often highlight the G18’s stable performance and easy integration with Cox service. The Wi-Fi 6 capabilities receive praise for improving wireless speeds and coverage in larger homes.
  See it on Amazon Here

NETGEAR Nighthawk Modem Router Combo (CAX30) DOCSIS 3.1…

Another look at the NETGEAR Nighthawk CAX30 underscores its exceptional value for Cox subscribers aiming for top-tier performance. This unit truly stands out by merging a multi-gig DOCSIS 3.1 modem with a powerful WiFi 6 router (AX2700), offering a future-proof solution for even the most data-hungry households. If consistent, fast internet with wide wireless coverage is your priority, the CAX30 remains an excellent choice.

• Key Features:

  • Compatible with major cable internet providers including Xfinity, Spectrum, Cox (NOT Verizon, AT&T, CenturyLink, DSL, DirecTV, DISH, or bundled voice services).
  • Best for cable provider plans up to 2Gbps.
  • Coverage up to 2,000 sq. ft. and 25 concurrent devices with dual-band WiFi 6 (AX2700) speed (up to 2.7Gbps).
  • 4 x 1 Gig Ethernet ports (supports port aggregation) and 1 USB 3.0 port.
  • Replaces your cable modem and WiFi router, saving up to $168/yr in equipment rental fees.
  • DOCSIS 3.1 and 32×8 channel bonding.
  • NETGEAR Armor provides a powerful suite of security tools (includes 30-day trial).
  • Easily set up and manage WiFi with the Nighthawk app.

• Pros:

  • High-speed DOCSIS 3.1 and WiFi 6 for superior performance.
  • Excellent wireless coverage for medium to large homes.
  • Integrated security features with trial.
  • Streamlined setup and management.
  • Eliminates monthly rental fees.

• Cons:

  • Premium price point.
  • Security subscription after trial adds to long-term cost.

• User Impressions: Reviewers consistently praise the CAX30 for its impressive speed and stability, noting significant improvements over rented ISP equipment. The ease of installation and the reliability of the WiFi signal are frequently highlighted.
  See it on Amazon Here

ARRIS SURFboard SB8200 DOCSIS 3.1 Multi‑Gig Cable Modem |…

For those who prefer to pick their own WiFi router or already have one they love, the ARRIS SURFboard SB8200 is a fantastic standalone modem. This DOCSIS 3.1 multi-gig cable modem is engineered to deliver ultra-fast speeds for today’s and tomorrow’s internet plans, including Cox’s highest tiers. Its two 1 Gigabit Ethernet ports offer flexibility, making it a reliable foundation for any high-performance home network.

• Key Features:

  • Multi‑Gig speed for today & tomorrow: DOCSIS 3.1 performance supports cable internet plans up to 2 Gbps.
  • Save on rental fees: Own your modem and avoid monthly equipment charges—check with your cable provider.
  • Compact, modern design: Space‑saving footprint with discrete LED indicators.
  • Easy setup: Connect cable, power on, and activate with your cable provider. Then connect a Wi‑Fi router.
  • Modem only: Requires a separate Wi-Fi router or mesh system for home Wi-Fi coverage.
  • Fast Ethernet: Provides two 1 Gigabit Ethernet ports.
  • Provider compatibility: CableLabs certified, tested and qualified for use with Cox, Xfinity, and Spectrum.
  • Not compatible with fiber, DSL, or satellite services.

• Pros:

  • Future-proof DOCSIS 3.1 for multi-gig plans.
  • Reliable and stable internet connection.
  • Two Gigabit Ethernet ports for flexible router connections.
  • Reputable ARRIS SURFboard brand quality.
  • Significant rental fee savings.

• Cons:

  • Requires a separate WiFi router, increasing overall cost if you don’t already have one.
  • No built-in WiFi.

• User Impressions: Customers love the SB8200 for its rock-solid performance and simplicity. It’s often recommended for its capability to handle fast Cox plans without breaking a sweat, serving as an excellent backbone for a custom home network setup.
  See it on Amazon Here

ARRIS (G34) – Cable Modem Router Combo – Fast DOCSIS…

The ARRIS G34 is an impressive modem-router combo that brings high-speed DOCSIS 3.1 capabilities together with advanced Wi-Fi 6, perfect for Cox users with multi-gig internet needs. Supporting plans up to 2.5 Gbps, this unit ensures your entire household can enjoy ultra-fast streaming, gaming, and downloads without a hitch. Its compact design and easy setup make it a user-friendly choice for boosting your home’s connectivity.

• Key Features:

  • Multi-Gig speed: DOCSIS 3.1 performance supports cable internet plans up to 2.5 Gbps.
  • Save on rental fees: Avoid monthly equipment charges—check with your cable provider for compatibility.
  • Compact, modern design: Space-saving footprint with simple LED indicators.
  • Easy setup: Connect cable, power on, and activate with your cable provider. Personalize Wi-Fi network.
  • Wi-Fi 6 Coverage: Dual-band Wi-Fi 6 (AX3000) delivering up to 3 Gbps wireless performance.
  • Fast Ethernet: Provides 4 – 1 Gigabit Ethernet ports for multiple wired devices.
  • Provider compatibility: CableLabs certified, tested and qualified for use with Cox, Xfinity, and Spectrum.
  • Not compatible with fiber, DSL, or satellite services.

• Pros:

  • Supports very high internet speeds (up to 2.5 Gbps).
  • Integrated Wi-Fi 6 for excellent wireless performance.
  • Four Gigabit Ethernet ports for wired connections.
  • Easy to set up and manage.
  • Eliminates rental fees.

• Cons:

  • Premium price tag.
  • May be more than necessary for slower internet plans.

• User Impressions: Users report excellent stability and speed with the G34, especially when paired with faster Cox plans. The Wi-Fi 6 coverage is a frequent highlight, ensuring strong signals throughout the home.
  See it on Amazon Here

Netgear Nighthawk Cable Modem WiFi Router Combo…

The Netgear Nighthawk C7000 (AC1900) is a well-established modem-router combo that continues to be a solid performer for Cox customers with internet plans up to 800 Mbps. Combining DOCSIS 3.0 technology with AC1900 WiFi, it offers reliable connectivity and ample coverage for medium-sized homes and moderate device usage. This unit is a cost-effective way to replace your rented equipment and save money without sacrificing performance for many users.

• Key Features:

  • Compatible with all major cable internet providers: Xfinity by Comcast, COX, and Spectrum (NOT Verizon, AT&T, CenturyLink, DSL, DirecTV, DISH, or cable bundled voice services).
  • Save monthly rental fees: Model C7000 replaces your cable modem and WiFi router, saving up to $150/yr.
  • Built for fast speed: Best for cable provider plans up to 800 Mbps speed.
  • Fast Wi-Fi Performance: Up to 1800 sq ft wireless coverage and 30 devices connected.
  • Versatile Connections: 4 Gigabit Ethernet ports and one USB port for storage devices.
  • Modem Technology: Engineered with 24×8 channel bonding and DOCSIS 3.0.
  • Safe & Secure: Supports WEP and WPA/WPA2 wireless security protocols.

• Pros:

  • Excellent value for plans up to 800 Mbps.
  • Integrated modem and router for convenience.
  • Good wireless coverage and device support.
  • Four Gigabit Ethernet ports for wired devices.
  • Significant savings on rental fees.

• Cons:

  • DOCSIS 3.0, not ideal for multi-gig plans.
  • WiFi 5 (AC1900) not as future-proof as WiFi 6.

• User Impressions: Many users appreciate the C7000’s consistent performance and ease of installation, noting it’s a reliable upgrade from ISP-provided equipment. The cost savings are a significant draw, and for those not on the absolute fastest plans, it performs admirably.
  See it on Amazon Here

Arris (G20) – Cable Modem Router Combo – Fast DOCSIS…

The Arris G20 represents a strong offering for Cox internet users seeking a modern, all-in-one solution. This cable modem router combo combines cutting-edge DOCSIS 3.1 technology with powerful Wi-Fi 6, ensuring fast speeds and a secure connection for all your devices. From high-definition streaming to intensive online gaming, the G20 is built to deliver a robust and reliable internet experience across your home network.

• Key Features:

  • Fast, Reliable Connection: Enjoy high-speed streaming, gaming, and browsing with a trusted brand.
  • Advanced Modem Tech: Uses DOCSIS 3.1 for faster speeds, better security, and smoother gaming.
  • Strong Wi-Fi 6 Coverage: Dual-band Wi-Fi 6 delivers faster, wider wireless performance for your whole home.
  • Service Compatibility: Works with major ISPs like Xfinity, Spectrum, and Cox.
  • Save on Fees: Own your modem and avoid up to $168/year in rental charges.

• Pros:

  • DOCSIS 3.1 and Wi-Fi 6 for current and future speed requirements.
  • Reliable and secure performance.
  • Integrated design saves space and simplifies setup.
  • Excellent for multi-device households.

• Cons:

  • May not be necessary for users on very low-speed plans.
  • Like most combos, upgrades require replacing the whole unit.

• User Impressions: Users frequently commend the Arris G20 for its stable connection and noticeable speed improvements over ISP-rented equipment. The Wi-Fi 6 capabilities are often cited as a major benefit for seamless connectivity across multiple devices.
  See it on Amazon Here

NETGEAR Nighthawk AC1900 (24×8) DOCSIS 3.0 WiFi Cable Modem…

Identical in features to the C7000, this NETGEAR Nighthawk AC1900 modem-router combo continues to be a go-to choice for Cox subscribers on plans up to 800 Mbps. With its DOCSIS 3.0 modem and AC1900 WiFi capabilities, it provides a dependable and robust internet experience for streaming, browsing, and casual gaming. Replacing your ISP’s equipment with this unit can lead to substantial annual savings while maintaining a high level of performance for its class.

• Key Features:

  • Compatible with all major cable internet providers: Xfinity by Comcast, COX, and Spectrum (NOT Verizon, AT&T, CenturyLink, DSL, DirecTV, DISH, or cable bundled voice services).
  • Input voltage: 120-240V.
  • Save monthly rental fees: Model C7000 replaces your cable modem and WiFi router, saving up to $150/yr.
  • Built for fast speed: Best for cable provider plans up to 800Mbps speed.
  • Fast Wi-Fi Performance: Get up to 1800 sq ft wireless coverage and 30 devices connected with AC1900 speed (up to 1900 Mbps).
  • Versatile Connections: 4 Gigabit Ethernet ports and one USB port for storage devices.
  • Modem Technology: Engineered with 24×8 channel bonding and DOCSIS 3.0.
  • Safe & Secure: WEP and WPA/WPA2 wireless security protocols.

• Pros:

  • Cost-effective for mid-range internet plans.
  • Provides reliable AC1900 WiFi for good coverage.
  • Four Gigabit Ethernet ports for wired connectivity.
  • Proven reliability from the Nighthawk line.
  • Eliminates monthly equipment charges.

• Cons:

  • Limited to DOCSIS 3.0 speeds, not suitable for gigabit+ plans.
  • WiFi 5 (AC) is an older standard than WiFi 6 (AX).

• User Impressions: Many Cox users find this specific Nighthawk model to be a stable workhorse, offering consistent speeds and dependable wireless coverage. It’s frequently cited as a smart investment for cutting rental fees without compromising on everyday internet performance.
  See it on Amazon Here

Hitron CODA56 Cable Internet Modem ONLY – DOCSIS 3.1 |…

The Hitron CODA56 is a dedicated DOCSIS 3.1 cable modem designed for Cox users who demand multi-gigabit speeds and prefer using their own high-performance WiFi router. With a 2.5 Gbps Ethernet port, it’s built to handle internet plans 1 Gbps and faster, providing a robust and low-latency connection ideal for 4K streaming, online gaming, and large file transfers. Remember, this is a modem ONLY, so a separate router is essential for WiFi.

• Key Features:

  • Cable Internet Only: Works EXCLUSIVELY with cable providers like Xfinity, Spectrum, Cox.
  • No WiFi Included – Router Required: This is a modem ONLY. You MUST buy a separate WiFi router.
  • Multi-Gig Performance: Supports internet plans up to 2.5 Gbps with 2.5 Gbps Ethernet port.
  • Optimized for plans 1 Gbps and faster from certified providers (Xfinity up to 2.33 Gbps, Spectrum 1 Gbps, Cox 2 Gbps).
  • Setup Requirements: Cable internet, separate WiFi router with 2.5 Gbps port for full speeds, ISP activation.
  • Gaming & Streaming Optimized: DOCSIS 3.1 technology with low latency for smooth 4K streaming, gaming, and video calls. Backward compatible with DOCSIS 3.0.
  • Potential Savings: May eliminate monthly modem rental fees.
  • Trusted Brand + Support: 30+ years Hitron expertise with 7-day technical support and warranty coverage.

• Pros:

  • Exceptional multi-gigabit speed capabilities (up to 2.5 Gbps).
  • Low latency, great for gamers and streamers.
  • DOCSIS 3.1 technology is future-proof.
  • Significant rental fee savings.
  • Ideal for those who want to pair with a high-end router.

• Cons:

  • Modem ONLY – absolutely requires a separate WiFi router.
  • Not compatible with fiber, DSL, or satellite.

• User Impressions: Users highly recommend the Hitron CODA56 for its raw speed and reliability with gigabit+ plans. Customers love the freedom it offers to choose their own router and frequently praise its stability and ease of activation with Cox.
  See it on Amazon Here

Hitron CODA56 Multi-Gigabit DOCSIS 3.1 Modem | 2.5 Gbps…

As another iteration of the Hitron CODA56, this multi-gigabit DOCSIS 3.1 modem solidifies its position as a top-tier choice for Cox customers with demanding speed requirements. Emphasizing its “modem only” nature, it’s perfect for users who prioritize raw internet speed and flexibility in their wireless setup. Its 2.5 Gbps Ethernet port ensures that even the fastest Cox internet plans are fully utilized, providing a robust and stable wired connection to your chosen WiFi router.

• Key Features:

  • Modem ONLY – No WiFi Included: This is a cable modem ONLY and does NOT provide WiFi. You MUST connect it to a separate WiFi router or mesh system.
  • Cable Internet Required: Works EXCLUSIVELY with cable internet service (DOCSIS) from providers like Xfinity, Spectrum, or Cox.
  • 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).
  • Setup Requirements: Cable internet, separate WiFi router with 2.5 Gbps port for full speeds, ISP activation.
  • 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.
  • Compatibility Checklist: Confirm cable internet, 1+ Gbps plan, separate WiFi router, ISP supports customer-owned modems.
  • Trusted Brand + Support: 30+ years of networking expertise with technical support 7 days per week, warranty coverage.

• Pros:

  • Delivers full multi-gigabit speeds for advanced Cox plans.
  • Low latency is a huge plus for real-time applications.
  • Future-proof with DOCSIS 3.1.
  • Excellent for building a custom, high-performance network.
  • Reliable performance and savings on rental fees.

• Cons:

  • Absolutely requires a separate WiFi router, which is an additional cost.
  • Not compatible with non-cable internet types.

• User Impressions: This Hitron CODA56 iteration consistently receives high marks for its stellar performance on fast Cox plans. Users appreciate its “set it and forget it” reliability and the ability to pair it with their preferred WiFi 6 or mesh system for a truly tailored home network.
  See it on Amazon Here

Conclusion

Choosing the best Cox Panoramic WiFi modem can significantly enhance your internet experience and save you money in the long run. Whether you’re a heavy gamer, a 4K streamer, or just want a reliable connection for your smart home, there’s a modem or modem-router combo out there for you. We’ve explored top-tier DOCSIS 3.1 options like the NETGEAR Nighthawk CAX30 and ARRIS G34 for those blazing-fast multi-gigabit plans, as well as reliable DOCSIS 3.0 choices like the NETGEAR C7000 for solid performance on plans up to 800 Mbps.

If you value simplicity and an all-in-one solution, a modem-router combo like the Arris G18 or NETGEAR CAX30 will serve you well, offering integrated WiFi 6 for wide coverage. For those who already have a high-performance router or prefer the flexibility to upgrade components separately, a standalone modem such as the ARRIS SURFboard SB8200 or the Hitron CODA56 is an excellent choice, providing a robust foundation for your home network.

Ultimately, the right modem depends on your Cox internet plan, your home’s size, and your budget. Remember to verify compatibility with Cox before purchasing and enjoy the benefits of faster speeds, stronger WiFi, and those sweet, sweet rental fee savings!

FAQ

Q1: Why should I buy my own modem instead of renting from Cox?

A: Buying your own modem can save you money on monthly rental fees (typically $10-$15/month, adding up to $120-$180 annually). You also get more control over your network, potentially better performance, and access to more advanced features than standard ISP equipment.

Q2: What’s the difference between a modem and a router?

A: A modem connects your home to your internet service provider (ISP), translating the internet signal (like cable) into a usable connection. A router, on the other hand, creates a local network in your home, allowing multiple devices to connect to the internet (via Wi-Fi or Ethernet) and communicate with each other. A modem-router combo unit combines both functions into one device.

Q3: What is DOCSIS 3.1, and do I need it?

A: DOCSIS 3.1 is the latest standard for cable internet technology. It supports much faster download and upload speeds (multi-gigabit), handles network congestion more efficiently, and offers lower latency. If you have a Cox internet plan of 1 Gig (1000 Mbps) or higher, or plan to upgrade to one, a DOCSIS 3.1 modem is highly recommended to get your full subscribed speeds. For lower speed plans (e.g., 500 Mbps or less), a DOCSIS 3.0 modem might still be sufficient.

Q4: Are these modems compatible with other internet providers like Xfinity or Spectrum?

A: Many of the modems reviewed (especially those from NETGEAR and ARRIS) are CableLabs certified and compatible with major cable internet providers beyond Cox, including Xfinity and Spectrum. However, it’s crucial to always check the specific product description and your chosen ISP’s approved modem list to confirm compatibility before purchasing.

Q5: Will I get faster internet speeds if I buy a new modem?

A: A new modem can provide faster speeds if your current modem is older, doesn’t support your internet plan’s full speed (e.g., using a DOCSIS 3.0 modem on a 1 Gig plan), or if your old modem is simply underperforming. However, your internet speed is ultimately determined by your Cox internet plan. A new modem helps ensure you receive the maximum speed your plan offers, but it won’t magically exceed your subscribed bandwidth.

Q6: How do I set up my new modem with Cox?

A: The setup process usually involves connecting the coaxial cable, plugging in the power adapter, and then connecting it to your computer (for modem-only) or router. After physical setup, you’ll need to activate it with Cox. This often involves visiting an activation website (e.g., activate.cox.com), calling Cox customer service, or using the Cox app to register your new modem’s MAC address. Have your Cox account details and the modem’s serial number/MAC address handy.

Q7: Do any of these modems support Cox’s bundled voice services?

**A: No, most third-party modems (including those reviewed here) are NOT compatible with Cox’s bundled voice (telephone) services. If you have Cox Voice, you will likely need to continue renting a Cox Panoramic WiFi gateway that supports voice, or you’ll need to separate your services and potentially use a different phone solution. Always confirm with Cox if you rely on their voice service.

Q8: Should I get a modem-only or a modem-router combo for my Cox service?

A: If you want simplicity, an all-in-one modem-router combo is convenient and takes up less space. However, if you’re an advanced user, have a large home needing a mesh Wi-Fi system, or already own a high-performance router, a modem-only unit provides more flexibility. Modem-only units also allow you to upgrade your router independently in the future without replacing the modem.