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Netgear CAX30S

NETGEAR Nighthawk CAX30S DOCSIS 3.1 cable modem WiFi 6 router combo, front view on a white background

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NETGEAR CAX30S cable modem router

Cable modem:
DOCSIS 3.1 (32x8 DOCSIS 3.0 compatible); supports 1 Gbps+ internet speed tiers
Wi-Fi:
Wi-Fi 6 (802.11ax) dual-band AX2700; 2.4 GHz 3x3 up to 0.9 Gbps, 5 GHz 3x3 up to 1.8 Gbps
LAN:
4x Gigabit Ethernet ports, two of which support Gigabit link aggregation

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Package details

Model: CAX30S-100NAS

A 2-in-1 DOCSIS 3.1 cable modem and AX6000 router with two 1 GbE ports.

Condition:
Confirm new or reconditioned on the listing
Quantity:
Confirm package quantity on the listing
Included essentials:
CAX30S modem router, Ethernet cable, power adapter, quick start guide

Important limit: Wi-Fi 6, not Wi-Fi 7, and a 1G Ethernet ceiling on the LAN ports

How many units?

Confirm condition, quantity and included accessories on the retailer’s listing.

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Specifications checked November 6, 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.

Internet service type

Choose your connection before choosing a modem.

The cable modem candidateApproval comes first

Netgear CAX30S

Fastest Ethernet
1 Gbps

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 CAX30S DOCSIS 3.1 Cable Modem + Wi-Fi 6 Router Combo

NETGEAR CAX30S cable modem router (CAX30S-100NAS)

Recorded model: CAX30S

Specifications checked 2026-11-06.

Wi-Fi
Wi-Fi 6 (802.11ax) dual-band AX2700; 2.4 GHz 3x3 up to 0.9 Gbps, 5 GHz 3x3 up to 1.8 Gbps
In the box
CAX30S modem router, Ethernet cable, power adapter, quick start guide

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
10.0 x 8.3 x 4.3 in (254 x 211 x 110 mm)
Weight
2.10 lb (0.95 kg)

In the box

CAX30S modem router, Ethernet cable, power adapter, quick start guide

Manufacturer specifications

NETGEAR Nighthawk CAX30S DOCSIS 3.1 Cable Modem + Wi-Fi 6 Router Combo

A two-in-one DOCSIS 3.1 cable modem and dual-band Wi-Fi 6 (AX2700) router for Xfinity, Spectrum and Cox, with four Gigabit LAN ports and 90 days of NETGEAR Armor included.

Which version should you buy?

Selected package: NETGEAR CAX30S cable modem router (CAX30S-100NAS).

Related models and generations

These are different products. Check their specifications separately.

  • CAX30S Model: CAX30S-100NAS

    A 2-in-1 DOCSIS 3.1 cable modem and AX6000 router with two 1 GbE ports.

    Replacing a rented cable gateway with one Wi-Fi 6 router/modem box.

    Manufacturer details · CAX30S

Purchase links appear where the exact offer is verified. Confirm the named model, quantity and accessories before ordering.

Watch out

  • CAX30S is sold for specific cable operators; check your operator's supported-modem list.
  • CAX30 (no S) is the standard retail version with similar DOCSIS 3.1 and Wi-Fi 6 specs.
  • CAX30S has 1 GbE ports; CAX80 steps up to AX6000 with 4 ports and a 2.5 GbE WAN alternative.

Why people pick it

  • One box replaces both a rented modem and a separate router
  • Four Gigabit LAN ports with aggregation for a 2 Gbps wired link
  • USB 3.0 port for shared storage

Know before you buy

  • Wi-Fi 6, not Wi-Fi 7, and a 1G Ethernet ceiling on the LAN ports
  • Not usable with Xfinity Voice plans or fiber providers
  • Armor is a subscription after the 90-day trial

Full specifications

Cable modemDOCSIS 3.1 (32x8 DOCSIS 3.0 compatible); supports 1 Gbps+ internet speed tiers
Wi-FiWi-Fi 6 (802.11ax) dual-band AX2700; 2.4 GHz 3x3 up to 0.9 Gbps, 5 GHz 3x3 up to 1.8 Gbps
LAN4x Gigabit Ethernet ports, two of which support Gigabit link aggregation
USB1x USB 3.0 port for storage and media sharing
ProcessorDual-core 1.5 GHz
FeaturesSmart Connect band steering, OFDMA uplink and downlink, SPI/NAT firewall, DoS prevention, VPN support
Devices (maker claim)Up to 25 concurrent devices
Coverage (maker claim)Up to 2,000 sq ft
Service compatibilityXfinity, Spectrum, Cox and other major cable providers; not compatible with Xfinity Voice plans or fiber ISPs
SecurityWPA3-capable wireless with NETGEAR Armor; 90 days of Armor included
ManagementNighthawk app setup and management
Dimensions10.0 x 8.3 x 4.3 in (254 x 211 x 110 mm)
Weight2.10 lb (0.95 kg)
In the boxCAX30S modem router, Ethernet cable, power adapter, quick start guide

From manufacturer documentation, checked November 6, 2026. Spotted an error? Tell us.

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