Netgear CM1000 Ultra-High Speed DOCSIS 3.1 Cable Modem - Reliable

Our review of the Netgear CM1000 (Renewed) finds it best suited to households that want a simple, high-speed cable modem to replace rental equipment and support a separate WiFi router. The bottom line: this DOCSIS 3.1 modem delivers reliable wired throughput for plans up to 1Gbps where certified, and it can save you yearly rental fees by replacing provider hardware. While it is not a router and lacks voice support or provider compatibility with DSL or fiber gateways, the CM1000 is a practical choice for users with cable plans from supported providers who need a sturdy, single-port modem.

Key Features

• DOCSIS 3.1 compatibility: Supports modern cable speeds and future-proofing for higher bandwidth on certified networks up to 1Gbps.
• Provider certifications: Certified with major cable providers such as Spectrum and Cox up to 1Gbps and Xfinity up to 800Mbps for straightforward setup on those networks.
• Single Gigabit Ethernet port: Offers a direct wired connection to a computer or to a separate WiFi router for whole-home wireless coverage using your chosen router.
• Cost savings: Replaces provider rental equipment and can reduce monthly fees, saving up to the stated annual rental amount over time.
• US use: Built for use in the US market with the necessary tuning and certifications for local cable networks.

Who It's For

The CM1000 is ideal for users who subscribe to cable internet from certified providers and want to eliminate monthly modem rental fees while maintaining gigabit-capable wired speeds. It suits tech-savvy households that already own or plan to buy a separate WiFi router, since the modem provides a single Ethernet handoff rather than built-in wireless.

Shoppers who should look elsewhere include anyone on DSL, fiber, bundled voice services, or satellite TV provider gateways, and users who need a modem/router combo or multiple Ethernet ports built into one device. It is also not compatible with certain ISPs, so confirm provider certification before buying.

Pros & Cons

Pros

• Delivers solid wired throughput compatible with gigabit cable plans on certified networks, improving upload and download stability.
• Saves on equipment rental fees by replacing provider modems, offering clear long-term value.
• Simple handoff via a 1 Gigabit Ethernet port makes it easy to pair with any third-party WiFi router.

Cons

• Only one Ethernet port and no built-in WiFi, so an additional router is required for wireless devices.
• Not compatible with DSL, certain fiber or bundled voice services, and some providers, limiting use for non-cable customers.

Specifications

Our Verdict

The Netgear CM1000 (Renewed) is a sensible buy for cable subscribers who need a dedicated DOCSIS 3.1 modem to unlock gigabit plans and avoid rental fees, provided their ISP is supported. It pairs well with any standalone router, delivers dependable wired performance, and represents good value for users who prioritize speed and long-term savings over integrated wireless features.

Frequently Asked Questions

Will this work with my cable provider?
Check with your provider first; it is certified for Spectrum and Cox up to 1Gbps and Xfinity up to 800Mbps, but not compatible with some ISPs.

Does this modem include WiFi?
No, the CM1000 is a modem only and requires a separate WiFi router to provide wireless coverage.

Can it replace my provider rental modem?
Yes, replacing the rental modem with this unit is the intended use and can save on annual rental fees when your provider supports the model.