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Black rectangular Netgear Nighthawk CM2500 cable modem with two Ethernet ports

Netgear Inc.

Netgear Inc. Nighthawk CM2500-100NAS DOCSIS 3.1 2Gbps Cable Modem

SKU CH-J4V4-23DVS MPN CM2500-100NAS

DOCSIS 3.1 cable modem delivers up to 2Gbps download and 1Gbps upload using mid/high-split technology with two 1Gbps Ethernet ports for link aggregation

  • Ethernet ports2 × 1 Gbit/s
  • Supported standardsDOCSIS 3.1
  • Wi-fi generationWiFi 6E or WiFi7
  • Maximum transmission rate32 downstream and 8 upstream SC-QAM channels 2 OFDM Downstre
  • Product typeCable Modem
  • Key featuresTechnical Specifications: 32 downstream and 8 upstream SC-QA

Model CM2500

  • DOCSIS 3.1 mid/high-split unlocks the fastest cable internet tiers available
  • Up to 2 Gbps download and 1 Gbps upload for high-capacity home networking
  • Two 1 Gbps Ethernet ports enable link aggregation with a compatible router
  • 32 downstream and 8 upstream SC-QAM channels plus 2 OFDM and 2 OFDMA channels
  • Pairs with WiFi 6E or WiFi7 routers and Orbi systems for whole-home coverage

Nighthawk CM2500 cable modem

The Netgear Nighthawk CM2500 is a DOCSIS 3.1 cable modem built for households that need multi-gigabit internet performance. It supports downstream speeds up to 2Gbps and upstream speeds up to 1Gbps when paired with a compatible router using link aggregation.

DOCSIS 3.1 mid/high-split limits

The modem uses 32 downstream and 8 upstream SC-QAM channels plus 2 OFDM downstream and 2 OFDMA upstream channels to reach its rated throughput. Actual speeds depend on the cable provider's plant and the subscription tier, so the 2Gbps ceiling is only available where the operator has deployed mid/high-split spectrum.

Two 1Gbps Ethernet ports and router pairing

Dual Gigabit Ethernet ports allow link aggregation to a router that supports the feature, unlocking the full 2Gbps pipe for the local network. The unit includes an Ethernet cable and power adapter, and Netgear highlights pairing with WiFi 6E or WiFi 7 routers or Orbi systems for wireless distribution.

How it compares

Measured against everything we stock in Cable Modems & Gateway Routers, at today’s prices. Recalculated every night.

Price $190.99
Pricier than about 70% of the 122 comparable items (median $120.99).

Specifications

Product
Brand nameNETGEAR
Product lineNighthawk
Model nameCM2500-100NAS
Product typeCable Modem
Connectivity
Ethernet ports2 × 1 Gbit/s
Supported standardsDOCSIS 3.1
Wi-fi generationWiFi 6E or WiFi7
Size & build
Shipping weight1.11 kg
Package size250 × 220 × 114 mm
In the box
In the boxNighthawk® Mid/High-Split 2 Gbit/s Internet Speed Cable Modem (CM2500)
One (1) Ethernet cable
Power adapter
Quick start guide
More details
Maximum transmission rate32 downstream and 8 upstream SC-QAM channels
2 OFDM Downstream channels and 2 OFDMA Upstream channels

Other versions of this model

3 more in the same range

Questions about this item

Which Nighthawk CM2500 version should I choose for a plan above 1 Gbps?

The CM2500-100NAS is the single model offered; it delivers up to 2 Gbps downstream and 1 Gbps upstream when your ISP provisions a mid/high-split DOCSIS 3.1 tier.

What does the 2 Gbps headline speed mean once the modem is installed?

It is the combined throughput you can reach by linking both 1 Gbps Ethernet ports to a router that supports link aggregation; a single port caps at 1 Gbps.

How does the DOCSIS 3.1 mid/high-split standard cap real-world performance?

The spec provides 32 SC-QAM downstream and 8 upstream channels plus 2 OFDM downstream and 2 OFDMA upstream channels, giving roughly 20 percent more usable spectrum than older splits.

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