Hitron CODA56
- Fastest wired port
- 2.5 Gbps
A DOCSIS 3.1 cable modem with one 2.5 Gbps Ethernet port, made for cable plans up to 2.5 Gbps.
Check package and model options
- Multi-gig internet
- Home office
Netgear
Netgear CM3000
Check your model and package
CM3000, new standalone modem
- DOCSIS:
- DOCSIS 3.1 with mid-split and high-split support
- Max speeds (maker):
- Up to 2.5 Gbps download (limited by the 2.5 Gbps port) and up to 1 Gbps upload
- Ethernet:
- 1x 2.5 Gbps, 2x 1 Gbps
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Choose your internet service in the connection check before buying.Package details
Model: CM3000
Has one 2.5 Gbps Ethernet port and two 1 Gbps ports. The package contains a modem; a Wi-Fi router is bought separately.
- Condition:
- New package; confirm seller condition
- Quantity:
- Confirm package quantity on the listing
- Included essentials:
- CM3000, Ethernet cable, power adapter, quick install guide
Important limit: No voice (phone) support
How many units?Confirm condition, quantity and included accessories on the retailer’s listing.
Compare versions and packagesSpecifications checked November 2, 2026. Full product details
Right connection. Right box.
Start at the wallBuy the right kind of box
How does internet arrive?
The cable coming into your home decides what belongs here.
Choose your connection before choosing a modem.
The cable modem candidateApproval comes first
Netgear CM3000
DOCSIS 3.1 · standalone cable modem
- Fastest Ethernet
- 2.5 Gbps
- Wi-Fi
- None
- Voice
- None
Maker’s provider claim
Netgear's table (maker claim, check each ISP's own list): Xfinity 2 Gbps down / 200 Mbps up; Spectrum 1 Gbps / 35 Mbps; Cox 1 Gbps / 100 Mbps
Current ISP approval is not verified in this record.Start with the service
A modem is not a Wi-Fi upgrade.
A DOCSIS cable modem translates cable service to Ethernet. Your router handles your home network.
The trap to avoid
A cable modem does not replace a fiber ONT or a DSL modem.
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Source specs & exact version
Netgear Nighthawk CM3000 Mid/High-Split DOCSIS 3.1 Cable Modem (2.5 Gbps)
CM3000, new standalone modem
Recorded model: CM3000
Specifications checked 2026-11-02.
- DOCSIS
- DOCSIS 3.1 with mid-split and high-split support
- Ethernet
- 1x 2.5 Gbps, 2x 1 Gbps
- Wi-Fi
- None: pair it with a router or mesh system
- Voice
- No voice ports; not compatible with cable bundled voice services or Xfinity Voice
- Max plan speeds by ISP
- Netgear's table (maker claim, check each ISP's own list): Xfinity 2 Gbps down / 200 Mbps up; Spectrum 1 Gbps / 35 Mbps; Cox 1 Gbps / 100 Mbps
- In the box
- CM3000, Ethernet cable, power adapter, quick install guide
- Manufacturer specifications for Netgear Nighthawk CM3000 Mid/High-Split DOCSIS 3.1 Cable Modem (2.5 Gbps) ↗
- Recorded source 2 for Netgear Nighthawk CM3000 Mid/High-Split DOCSIS 3.1 Cable Modem (2.5 Gbps) ↗
- Recorded source 3 for Netgear Nighthawk CM3000 Mid/High-Split DOCSIS 3.1 Cable Modem (2.5 Gbps) ↗
- Recorded source 4 for Netgear Nighthawk CM3000 Mid/High-Split DOCSIS 3.1 Cable Modem (2.5 Gbps) ↗
- Recorded source 5 for Netgear Nighthawk CM3000 Mid/High-Split DOCSIS 3.1 Cable Modem (2.5 Gbps) ↗
Maker compatibility is a claim. Current ISP approval for your exact tiers and address is not verified here.
Photo credit: manufacturer image source ↗
Specifications explain hardware limits. No performance tests are claimed.
Size and package
Size and placement
- Dimensions
- 6.8 x 3.7 x 8.2 in (172 x 94 x 208 mm); 1.09 lb
In the box
CM3000, Ethernet cable, power adapter, quick install guide
Netgear Nighthawk CM3000 Mid/High-Split DOCSIS 3.1 Cable Modem (2.5 Gbps)
A DOCSIS 3.1 cable modem with a 2.5 Gbps Ethernet port and mid/high-split support for faster upload tiers.
Which version should you buy?
Selected package: CM3000, new standalone modem.
Selected package
CM3000 new standalone modem
This pageModel: CM3000
- What differs
- Has one 2.5 Gbps Ethernet port and two 1 Gbps ports. The package contains a modem; a Wi-Fi router is bought separately.
- Best for
- Multi-gig cable customers who already have, or will buy, a suitable router.
Choose your internet service in the connection check before buying.
Condition
CM3000 certified refurbished
Model: CM3000-100NAR
- What differs
- A refurbished CM3000 rather than a new unit; condition is the distinction, not a faster modem model.
- Best for
- Buyers willing to choose refurbished after checking the seller warranty and included accessories.
Related models and generations
These are different products. Check their specifications separately.
CM2500 standalone modem Model: CM2500
Has two 1 Gbps ports and no 2.5 Gbps port. Its up to 2 Gbps download requires link aggregation with a compatible router.
Cable customers who can use link aggregation or need only a gigabit connection.
Purchase links appear where the exact offer is verified. Confirm the named model, quantity and accessories before ordering.
Watch out
- CM3000 adds a 2.5 Gbps port; the similar CM2500 needs link aggregation for more than gigabit.
- The standalone CM3000 has no built-in Wi-Fi or phone ports.
- check package contents rather than treating it as the modem alone.
- CM3000-100NAR is the refurbished listing.
Why people pick it
- 2.5 Gbps port for multi-gig cable plans
- Mid/high-split support for faster upload tiers
- Link aggregation option for routers without a 2.5G WAN port
Know before you buy
- No voice (phone) support
- No Wi-Fi: needs a separate router
- ISP approval has to be checked on each provider's own list
Full specifications
| DOCSIS | DOCSIS 3.1 with mid-split and high-split support |
|---|---|
| Max speeds (maker) | Up to 2.5 Gbps download (limited by the 2.5 Gbps port) and up to 1 Gbps upload |
| Ethernet | 1x 2.5 Gbps, 2x 1 Gbps |
| Link aggregation | The two gigabit ports can be aggregated to a compatible router for up to 2 Gbps |
| Wi-Fi | None: pair it with a router or mesh system |
| Voice | No voice ports; not compatible with cable bundled voice services or Xfinity Voice |
| Max plan speeds by ISP | Netgear's table (maker claim, check each ISP's own list): Xfinity 2 Gbps down / 200 Mbps up; Spectrum 1 Gbps / 35 Mbps; Cox 1 Gbps / 100 Mbps |
| High-split note (maker) | Mid-split is offered by some ISPs today; high-split may come later: check with your ISP |
| Dimensions | 6.8 x 3.7 x 8.2 in (172 x 94 x 208 mm); 1.09 lb |
| In the box | CM3000, Ethernet cable, power adapter, quick install guide |
| Firmware support (Netgear policy) | Netgear's End of Service policy: firmware and security updates generally end three years after the product's last sale date |
| FCC status (checked Nov 1, 2026) | Netgear's Conditional Approval explicitly covers its CM-series cable modems, Apr 14, 2026 to Oct 1, 2027 (FCC public notice DA 26-1130) |
| Multi-Gig port link rates | 100 Mbps, 1 Gbps or 2.5 Gbps on the Multi Gig Ethernet port. |
| Gigabit port link rates | 10/100/1000 Mbps on each of the Eth1 and Eth2 Ethernet ports. |
From manufacturer documentation, checked November 2, 2026. Spotted an error? Tell us.
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