A cable modem and a wireless router take up two outlets, two device footprints, and often two separate setup processes. A modem router combo removes that clutter, but the wrong one can leave a fast cable plan limited by an older DOCSIS standard or WiFi generation.
The Best cable modem router combo choices here range from compact WiFi 6 units to a two-piece mesh system for larger homes. We compared their provider compatibility, wireless capacity, wired connections, coverage claims, and the practical differences between new and renewed models.
The NETGEAR CAX30 is our top pick, with the ARRIS G34, NETGEAR CAX80, and NETGEAR Orbi CBK752 covering higher-capacity, multi-gig, and whole-home needs.
| # | Product | Award | WiFi and modem standard | Wired ports | Best for |
|---|---|---|---|---|---|
| 1 | NETGEAR CAX30 | Best overall | WiFi 6 AX2700, DOCSIS 3.1 | 4 x 1 Gigabit, USB 3.0 | Most cable homes |
| 2 | ARRIS G34 | Best compact design | WiFi 6 AX3000, DOCSIS 3.1 | 4 x 1 Gigabit | Simple, space-conscious setups |
| 3 | NETGEAR CAX80 | Best for multi-gig networking | WiFi 6 AX6000, DOCSIS 3.1 | 4 x 1 Gigabit, 2.5 Gigabit, USB 3.0 | Fast plans and wired backhaul |
| 4 | NETGEAR C7000 | Best for established WiFi 5 homes | WiFi 5 AC1900, DOCSIS 3.0 | 4 x 1 Gigabit, USB 2.0 | Older cable plans |
| 5 | NETGEAR CAX30S | Best for built-in security tools | WiFi 6 AX2700, DOCSIS 3.1 | 4 x 1 Gigabit, USB 3.0 | Families wanting Armor features |
| 6 | ARRIS G20 | Best straightforward ARRIS option | WiFi 6, DOCSIS 3.1 | Not specified | Basic modern cable networks |
| 7 | NETGEAR C7000 Renewed | Best renewed C7000 configuration | WiFi 5 AC1900, DOCSIS 3.0 | Not specified | Xfinity and Cox households |
| 8 | NETGEAR Orbi CBK752 | Best for large homes | WiFi 6 AX4200, DOCSIS 3.1 | Not specified | Homes needing mesh coverage |
| 9 | NETGEAR C7000 Renewed Xfinity | Best basic renewed pick | WiFi 5 AC1900, DOCSIS 3.0 | Not specified | Xfinity and Cox plans |
| 10 | NETGEAR CAX80 Renewed | Best renewed multi-gig option | WiFi 6 AX6000, DOCSIS 3.1 | 4 x 1 Gigabit, 2.5 Gigabit, USB 3.0 | High-capacity networks |
1. NETGEAR CAX30: Best Overall

Pros
- WiFi 6 and DOCSIS 3.1 in one unit
- Four Gigabit Ethernet ports
- USB 3.0 storage and device support
- Claimed coverage up to 2, 000 square feet
- Nighthawk app setup and management
Cons
- No 2.5 Gigabit Ethernet port
- Not compatible with fiber, DSL, satellite, or bundled voice service
- Armor protection is offered as a trial
Best for: cable subscribers who want a capable single-box network for everyday home use.
The NETGEAR CAX30 gets the fundamentals right without making the home network feel like a project. It replaces both the cable modem and router, so the coax connection feeds one enclosure rather than a chain of separate boxes. The Nighthawk app is designed to guide setup and provide network management after activation.
Its DOCSIS 3.1 modem and 32x8 channel bonding give it the right foundation for current cable service. On the wireless side, dual-band WiFi 6 is rated AX2700, with coverage listed up to 2, 000 square feet and support for 25 concurrent devices. Those figures are useful as planning limits, not guarantees. Walls, floor layout, client hardware, and the cable plan still determine what a real home experiences.
Four 1 Gigabit Ethernet ports make the CAX30 easy to place at the center of a wired network. Computers, game consoles, streaming players, and other fixed devices can connect directly, while the USB 3.0 port supports a storage drive or another USB-connected device. Port aggregation is available, though the unit does not offer the dedicated 2.5 Gigabit connection found on the CAX80.
Compared with the ARRIS G34, the CAX30 gives you more clearly specified management and USB functionality. The CAX80 is the stronger choice for multi-gig wired networking and heavier device loads, but it is also physically larger. The CAX30's weakness is its ceiling: it is a dual-band AX2700 system with Gigabit wired ports, so households building around multi-gig Ethernet should skip it.
For a typical Xfinity, Spectrum, or Cox cable home, this is the model we'd keep. It has the modern modem standard, current wireless generation, useful wired connectivity, and a manageable footprint without pushing into mesh hardware.
2. ARRIS G34: Best Compact Design

Pros
- DOCSIS 3.1 modem
- WiFi 6 AX3000 wireless
- Four Gigabit Ethernet ports
- Simple LED status indicators
- Compact dimensions for a combo unit
Cons
- No USB port is listed
- Not compatible with fiber, DSL, or satellite
- Provider approval still needs to be confirmed
Best for: cable users who want a compact, uncomplicated WiFi 6 gateway.
The ARRIS G34 has a more restrained personality than the Nighthawk models. It is built around a compact 10 by 3 by 8 inch footprint, with simple LEDs for power, upstream, downstream, and online status. That makes it a sensible fit for a shelf or desk where a tall, aggressive-looking router would be awkward.
The modem uses DOCSIS 3.1 and supports cable plans up to 2.5 Gbps according to its listed features. Its dual-band WiFi 6 radio is rated AX3000, or up to 3 Gbps of wireless performance in the manufacturer's combined-band specification. Four 1 Gigabit Ethernet ports provide room for wired devices, though the data does not list a faster multi-gig port.
ARRIS describes activation as a matter of connecting the coax and power, then joining the default wireless network or changing its name and password. The G34 is tested and qualified for Cox, Xfinity, and Spectrum, but the provider should still confirm model support before activation. Like every unit here, it is intended for cable service, not fiber, DSL, or satellite.
The G34 is a close alternative to the CAX30. Its AX3000 wireless rating is slightly higher on paper, and the compact body is appealing, while the CAX30 offers a USB 3.0 port and more detailed app and security features. The G34's biggest omission is expansion connectivity. Skip it if you need network storage attached directly to the gateway.
This is the clean choice for a household that wants WiFi 6 without a long feature checklist. It is particularly appealing when the modem will sit in a visible living area and the network will rely mostly on wireless clients.
3. NETGEAR CAX80: Best for Multi-Gig Networking

Pros
- AX6000 WiFi 6 capacity
- DOCSIS 3.1 modem
- Dedicated 2.5 Gigabit port
- Four additional Gigabit Ethernet ports
- USB 3.0 and port aggregation
Cons
- Larger and heavier than the CAX30
- Not compatible with fiber, DSL, or satellite
- Armor requires a separate subscription after its trial
Best for: cable households with multi-gig service, demanding wired devices, or many active clients.
The NETGEAR CAX80 is the performance-first option in this group. Its tall 10.4 inch height and 4.45 pound weight make it less discreet than the ARRIS G34, but that larger chassis houses a much more capable connection layout. This is the combo to consider when a single Gigabit port would become the obvious bottleneck.
The dual-band WiFi 6 system is rated AX6000 and is listed for up to 30 devices across up to 2, 500 square feet in an open layout. The manufacturer is clear that walls and floors reduce range and that real speeds depend on the plan and connected devices. The DOCSIS 3.1 modem supports cable service, with provider approval and activation still required.
Wired connectivity is the CAX80's defining advantage. Four Gigabit Ethernet LAN ports handle ordinary fixed devices, while the 2.5 Gigabit port can serve as a LAN or internet connection. Two Gigabit ports can also be aggregated for up to 2 Gbps in supported setups. A USB 3.0 port adds another path for storage or shared devices.
Against the CAX30, the CAX80 offers substantially more wireless headroom and a genuine multi-gig wired port. The Orbi CBK752 is better when the problem is dead zones across a large floor plan, not when one central location needs maximum throughput. The CAX80's weakness is that its capacity cannot fix poor coax service, incompatible provider equipment, or a house where the central placement is blocked by thick walls.
Choose it for a network with fast wired clients, high simultaneous activity, or a clear plan to move beyond ordinary Gigabit connections. For a smaller apartment with modest service, its extra hardware is difficult to justify.
4. NETGEAR C7000: Best for Established WiFi 5 Homes

Pros
- Four Gigabit Ethernet ports
- AC1900 WiFi 5
- DOCSIS 3.0 modem
- USB 2.0 port
- Nighthawk app controls
Cons
- Older WiFi 5 and DOCSIS 3.0 standards
- Cable support is limited to specified plan tiers
- Not compatible with fiber, DSL, satellite, or bundled voice
Best for: homes with established cable service that do not need WiFi 6 or multi-gig capability.
The NETGEAR C7000 is the older, simpler choice in the lineup. It combines a DOCSIS 3.0 modem with AC1900 WiFi 5, and its four Gigabit LAN ports make it easy to connect consoles, televisions, computers, and other stationary devices. The Nighthawk app supports setup, speed tests, device management, and pausing access.
Its wireless specification is up to 1.9 Gbps across the 2.4GHz and 5GHz bands, with coverage listed up to 1, 800 square feet and support for 30 devices. Beamforming+ is intended to improve range and reduce dead spots. That does not turn WiFi 5 into WiFi 6, but it can still be adequate for a moderate network whose clients are also older.
The modem is certified with Xfinity and Cox for the listed service tiers, and the product is not compatible with Spectrum, fiber, DSL, satellite, or bundled voice service. That provider limitation is more important here than the wireless headline. Buyers should confirm the exact plan and model approval before disconnecting an existing gateway.
The CAX30 is the clear modern upgrade, with DOCSIS 3.1 and WiFi 6, while the C7000 remains easier to match to an older, lower-demand network. The C7000's weakness is long-term headroom. Skip it if you are moving to a faster plan, adding many newer devices, or need current wireless security and capacity.
This model makes sense only when its specific provider and plan compatibility line up with an uncomplicated network. It is a functional fit for basic cable service, not a forward-looking centerpiece.
5. NETGEAR CAX30S: Best for Built-In Security Tools

Pros
- WiFi 6 and DOCSIS 3.1
- WPA, WPA2, and WPA3 support
- Four Gigabit Ethernet ports
- USB 3.0 port
- 90-day Armor trial listed
Cons
- No multi-gig Ethernet port
- Armor becomes a separate subscription
- Not compatible with fiber, DSL, satellite, or bundled voice
Best for: families that want current wireless security options and built-in network management.
The NETGEAR CAX30S is closely related to the CAX30, but its listed security support makes it the more interesting pick for households that pay attention to connected-device protection. It supports WPA, WPA2, and WPA3, and the feature set includes automatic safety updates and NETGEAR Armor tools.
The modem is DOCSIS 3.1 with 32x8 channel bonding. Dual-band WiFi 6 is rated AX2700, with coverage up to 2, 000 square feet and support for 25 concurrent devices. Those figures put it in the same practical class as the CAX30, so this is not the model to choose for a large home simply because its product title mentions a larger gigabit figure.
Four 1 Gigabit Ethernet ports support wired clients and port aggregation, while USB 3.0 handles a storage drive or another compatible device. The Nighthawk app is used for setup and management. The listed Armor trial is 90 days, and continued access requires a separate subscription, so buyers should treat it as an optional feature rather than a permanent part of the hardware.
The CAX30 remains our more balanced recommendation because it has the same core WiFi 6 class without making security software the main distinction. The CAX30S beats it for WPA3 support and the longer Armor trial. It loses to the CAX80 for multi-gig wired networking and to the Orbi CBK752 for difficult whole-home layouts.
Pick the CAX30S when security controls are central to the decision and the home fits within a single gateway's coverage. Skip it if you do not intend to use the software tools or if a 2.5 Gigabit connection is important.
6. ARRIS G20: Best Straightforward ARRIS Option

Pros
- DOCSIS 3.1 modem technology
- Dual-band WiFi 6
- Compatibility with major cable ISPs
- Simple single-unit design
Cons
- Ethernet port details are not listed
- No USB connectivity is listed
- Feature information is less extensive than the G34
Best for: cable users who want a current ARRIS gateway without extra network hardware.
The ARRIS G20 is the least complicated modern ARRIS option here. Its feature set focuses on the essentials: a DOCSIS 3.1 modem, dual-band WiFi 6, and compatibility with major providers including Xfinity, Spectrum, and Cox. The unit measures 9.53 by 7.68 by 4.41 inches, so it is not a tiny gateway, but it remains a single piece of equipment.
DOCSIS 3.1 matters because it is the newer cable modem platform in this roundup, with support for faster service, improved efficiency, and current network security features compared with DOCSIS 3.0. The WiFi 6 radio is described as providing faster and wider whole-home wireless performance, though the supplied data does not state an AX class, device limit, or coverage figure.
That absence of detail is the G20's defining limitation. The G34 names an AX3000 class, four Gigabit Ethernet ports, dimensions, and a setup sequence. The G20 gives less information about its physical connections and wireless ceiling. That does not make it unsuitable, but it does mean buyers with wired equipment or a demanding network should look closely at the model documentation before ordering.
Compared with the CAX30, the G20 is harder to evaluate for expansion and device capacity. It is also less informative than the G34, which is the better ARRIS choice when port count and wireless performance need to be clear in advance. The G20 should be skipped by anyone who needs a USB port, a specified multi-gig connection, or a documented device limit.
For a straightforward cable installation with ordinary wireless use, the G20 covers the modern basics. It is best suited to readers who already know their provider supports it and do not need a detailed connectivity checklist.
7. NETGEAR C7000 Renewed: Best Renewed C7000 Configuration

Pros
- AC1900 WiFi 5
- Supports cable plans up to 800 Mbps
- Claimed coverage up to 1, 800 square feet
- Supports up to 30 devices
- Combined modem and router design
Cons
- DOCSIS 3.0 is an older standard
- Compatibility excludes Spectrum and several other services
- Renewed condition adds more uncertainty than a new unit
Best for: Xfinity or Cox subscribers who specifically need a renewed C7000 configuration.
The NETGEAR C7000 Renewed has the same core identity as the new C7000: a DOCSIS 3.0 modem paired with AC1900 WiFi 5. Its listed service ceiling is up to 800 Mbps, and wireless coverage is specified at up to 1, 800 square feet for as many as 30 devices. This is a targeted product, not a general replacement for every cable gateway.
The renewed listing supplies a 120 to 240V input range and identifies the unit as AC1900 WiFi. It does not provide the new C7000's detailed port and app feature list, so buyers should not assume every accessory or connection described for another listing is included here. The central capability remains a single box for cable modem and WiFi service.
Compatibility is the deciding factor. The listing names Xfinity and Cox and excludes Spectrum, Verizon, AT&T, CenturyLink, DSL, satellite, and bundled voice services. It also advises checking the provider's website for speed-tier compatibility. That makes a provider lookup essential before activation, especially because a renewed unit may be purchased for a specific installation rather than broad future use.
The new NETGEAR C7000 is easier to recommend when its condition and included features matter. The CAX30 is a much stronger technical choice because it moves to WiFi 6 and DOCSIS 3.1. This renewed C7000's weakness is not just age. It is the narrower service match and the uncertainty that comes with renewed hardware.
Choose it only when your Xfinity or Cox plan fits the stated limit and you are comfortable with an older platform. For anyone planning a faster service tier, start with the CAX30 or G34 instead.
8. NETGEAR Orbi CBK752: Best for Large Homes

Pros
- Two-piece WiFi 6 mesh system
- Coverage up to 5, 000 square feet
- Support for 40 or more devices
- Tri-band wireless design
- Optional satellite expansion
Cons
- Much larger and heavier than a single gateway
- Provider speed limits vary by cable company
- Armor protection requires a separate subscription after its trial
Best for: large homes where one centrally placed modem router cannot cover every room.
The NETGEAR Orbi CBK752 is the only true mesh system in this roundup. It includes a cable modem router and WiFi 6 satellite, with coverage listed up to 5, 000 square feet and support for 40 or more devices. That changes the buying question. The CAX30 and G34 are single-gateway solutions, while the CBK752 is designed to distribute wireless coverage across a larger or more difficult floor plan.
Its tri-band mesh architecture automatically manages device connections, which can help keep clients attached to the appropriate part of the system as people move around the home. The AX4200 wireless rating is aimed at streaming, gaming, and video conferencing. Each optional additional Orbi satellite can add a further 2, 500 square feet, though those satellites are separate hardware.
The DOCSIS 3.1 modem supports plans up to 4 Gbps in the feature description, with specific certification details for Spectrum up to 1 Gbps, Cox up to 1 Gbps, and Xfinity up to 900 Mbps download and 200 Mbps upload. Those provider-specific figures matter more than the wireless label, since the cable service and approval process still set the connection's practical limits.
The CBK752 beats the CAX80 when coverage is the main problem. The CAX80 is the better central router for multi-gig wired connections, while the CAX30 is simpler for a normal-sized home. The Orbi system's weakness is its size and complexity. Its two units weigh a combined 8.2 pounds according to the listed product information, and a mesh system is unnecessary if one gateway already reaches every room.
Choose it when dead zones, multiple floors, or a spread-out layout are the reason you are replacing the current setup. If the modem can sit in a central location, the CAX80 or CAX30 is easier to manage.
9. NETGEAR C7000 Renewed Xfinity: Best Basic Renewed Pick

Pros
- AC1900 Nighthawk platform
- Intended for Xfinity and Cox cable service
- Single-unit modem and router design
- Listed support for plans up to 800 Mbps
Cons
- Very limited feature information
- DOCSIS 3.0 and WiFi 5 are dated
- Not compatible with Spectrum, fiber, DSL, or satellite
Best for: a basic Xfinity or Cox setup where a renewed C7000 is specifically approved.
The NETGEAR C7000 Renewed Xfinity is a particularly narrow recommendation because the listing supplies only a small amount of technical information. It identifies the model as a C7000-compatible Nighthawk cable modem and WiFi router, names Xfinity and Cox support, and lists cable plans up to 800 Mbps. That is enough to establish its role, but not enough to assess its connections or management tools in detail.
The product information identifies an AC1900 Nighthawk unit measuring 11.65 by 11.02 by 3.94 inches and weighing 1.6 pounds. Those dimensions differ from the other C7000 listing, which is a reason to treat these as separate listings rather than assume they are interchangeable packages. The data does not specify a port count, USB port, coverage area, or device limit for this entry.
Provider compatibility is the key filter. It excludes Spectrum as well as Verizon, AT&T, CenturyLink, DSL, satellite, and bundled voice services. It is described as suitable for cable plans up to 800 Mbps, but the provider should confirm the exact model before activation. That check is especially important with renewed equipment.
The C7000 Renewed configuration above is a better documented alternative, while the CAX30 is the stronger choice for a new WiFi 6 network. This entry's weakness is the lack of detail, not simply its older standard. Skip it if you need clear information about ports, coverage, or wireless capacity before buying.
It can still fit a narrowly defined installation. For everyone else, a model with a fuller feature set makes the setup easier to plan and troubleshoot.
10. NETGEAR CAX80 Renewed: Best Renewed Multi-Gig Option

Pros
- AX6000 WiFi 6
- DOCSIS 3.1 and 32x8 channel bonding
- 2.5 Gigabit LAN or internet port
- Four Gigabit Ethernet ports
- USB 3.0 and port aggregation
Cons
- Renewed condition
- Large single-unit design
- Not compatible with fiber, DSL, satellite, or bundled voice
Best for: buyers who want CAX80 connectivity and are considering renewed hardware.
The NETGEAR CAX80 Renewed preserves the feature profile that makes the original CAX80 distinctive. It combines a DOCSIS 3.1 modem with dual-band AX6000 WiFi 6, coverage up to 2, 500 square feet, and support for up to 30 concurrent devices. The product is intended for major cable providers including Xfinity, Spectrum, and Cox, with service approval still required.
Its connection layout is unusually useful for a combo unit. Four 1 Gigabit Ethernet ports serve ordinary wired equipment, while a 2.5 Gigabit multi-gig port can operate on the LAN or internet side. Two-port aggregation can reach up to 2 Gbps in supported configurations, and USB 3.0 adds another connection for compatible devices.
The modem uses DOCSIS 3.1 and 32x8 channel bonding. The listed cable-plan support reaches up to 6 Gbps, but actual service depends on the provider, plan, activation, and local network. The Nighthawk app handles setup and management, while automatic firmware updates and built-in security features are included in the listing.
The new CAX80 is the safer choice when condition and consistency are the priority. The CAX80 Renewed beats the CAX30 and G34 for multi-gig connectivity, and it is a better technical fit than the renewed C7000 models for a modern network. Its weakness is the same as the original CAX80's, with the added consideration of renewed hardware. Skip it if one Gigabit connections are sufficient or if you want the simplest possible gateway.
For a fast cable plan and a network built around wired workstations, gaming systems, or a multi-gig switch, this is the strongest renewed option. It makes less sense for a small home with ordinary wireless demands.
How to choose best cable modem router combo
The right combo depends on the cable service first, then on the wireless layout and wired devices inside the home.
Provider compatibility
Cable modem router combos are not universal internet gateways. The models here are not compatible with fiber, DSL, or satellite service, and several also exclude bundled voice service. Check the provider's approved-device list and your exact service tier before buying.
The CAX30, CAX30S, G34, and CAX80 models name broad compatibility with major cable providers. The C7000 listings are narrower, with Xfinity and Cox called out and Spectrum excluded in the supplied data.
DOCSIS generation
DOCSIS 3.1 is the current standard represented by most of the stronger picks here. It gives a combo modem more headroom for newer cable service than DOCSIS 3.0, which appears in the C7000 models.
A DOCSIS 3.0 unit can still suit an older plan, but it is a poor fit for someone planning a faster tier. Do not judge modem capability by the router's WiFi label alone. The cable side and wireless side have separate limits.
The fastest WiFi number cannot rescue a modem that your provider will not approve for your plan.
WiFi capacity and coverage
AX2700, AX3000, AX4200, and AX6000 describe wireless capacity across the bands, not a guaranteed speed to one phone or laptop. WiFi 6 is the better starting point for a new network, especially with many recent devices.
Coverage claims are also planning estimates. The CAX30 and CAX30S list up to 2, 000 square feet, the CAX80 lists up to 2, 500, and the Orbi CBK752 lists up to 5, 000 with its satellite. Thick walls, floors, placement, and interference can matter more than the headline number.
If the main problem is weak signal rather than modem capability, how extra wireless coverage changes a home network is a useful separate question. A mesh system such as the Orbi can be a better fit than adding a basic extender to an already crowded network.
Ethernet connections
Count the wired devices before choosing a gateway. Four Gigabit ports are enough for many homes, but a multi-gig workstation, NAS, switch, or internet plan may call for a 2.5 Gigabit connection.
The CAX80 models stand apart with a 2.5 Gigabit LAN or internet port. The CAX30, CAX30S, and G34 list four Gigabit ports, while the G20 and renewed C7000 entries provide less port information in the supplied data.
For a wired installation, the cable and router connection details that affect home networking deserve attention before you decide where the gateway will sit.
Single gateway or mesh
A single combo unit is simpler and usually easier to place in a small or medium home. Mesh becomes more useful when the modem must remain at one end of the house, when there are multiple floors, or when a single wireless source leaves persistent dead zones.
The Orbi CBK752 includes a router and satellite and can expand with additional satellites. That makes it the coverage specialist, but it also takes more space than a one-box CAX30 or G34. Readers considering a traditional router instead should compare the network features that matter in a larger home before choosing a replacement.

Frequently asked questions
Can a cable modem router combo work with fiber internet?
No. The products in this roundup are cable gateways and are not compatible with fiber service. Fiber customers need equipment designed for their provider's optical network, or a provider-approved router connected to an optical terminal.
Do these combos work with every cable provider?
No. Compatibility varies by model and provider. Xfinity, Spectrum, and Cox are named for several products, while the C7000 listings are more limited and specifically exclude some providers. Confirm approval for your exact plan before activation.
Is DOCSIS 3.1 better than DOCSIS 3.0?
DOCSIS 3.1 is the newer cable modem standard and generally gives a device more room for faster cable service. DOCSIS 3.0 can still work with compatible lower-tier plans, but it is the less flexible choice for future upgrades.
Is WiFi 6 necessary for a cable modem router combo?
WiFi 6 is not necessary for every household, but it is the more current wireless standard among these models. It can provide better capacity for newer devices and busy networks, while older WiFi 5 equipment may remain adequate for a smaller network with moderate activity.
Does AX6000 mean one device will get 6 Gbps?
No. AX6000 is a combined wireless class across the router's bands. A device's connection depends on its own WiFi hardware, distance, interference, channel conditions, and the internet service entering the modem.
Should I choose a mesh system or one gateway?
Choose a mesh system when coverage across several rooms or floors is the main issue. A single gateway is simpler when it can be placed centrally and reach the entire home. The Orbi CBK752 is the coverage-focused option here, while the CAX30 and CAX80 are stronger single-unit choices.
Can I use a cable combo with bundled voice service?
The listings for these products state that they are not compatible with bundled voice services. If your cable package includes a phone line, verify compatibility with the provider before replacing its supplied equipment.

The bottom line
The Best cable modem router combo for most cable homes is the NETGEAR CAX30. It combines DOCSIS 3.1, WiFi 6, four Gigabit ports, USB 3.0, and a useful management app without the extra complexity of a mesh system. The ARRIS G34 is the better alternative when a compact body and straightforward setup matter more than USB connectivity.
For demanding wired networks, choose the NETGEAR CAX80 or its renewed counterpart, both of which add AX6000 wireless and a 2.5 Gigabit port. For a large home with difficult coverage, the NETGEAR Orbi CBK752 is the more appropriate pick because its included satellite spreads the network beyond one gateway.
If you are undecided, confirm provider approval first, then choose the CAX30 unless your home clearly needs multi-gig ports or mesh coverage.
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