NETGEAR NIGHTHAWK CAX25 User manual

Quick Start
AC2400 WiFi Cable Modem Router
Model CAX25
Visit netgear.com/support to get your questions answered and access the latest
downloads.
You can also check out our NETGEAR Community for helpful advice at
community.netgear.com.
Customer-owned cable devices might not be compatible with certain cable
networks. Check with your cable Internet provider to conrm that this NETGEAR
cable device is allowed on your cable network.
If you are experiencing trouble installing your modem router, contact NETGEAR
at 1-866-874-8924.
Support and Community
The following table lists support contact information for cable Internet providers
that support your modem router.
Cable Internet Provider Support Contact Information
Cox https://www.cox.com/residential/support/home.html
https://www.cox.com/activate
1-888-556-1193
Mediacom https://support.mediacomcable.com
1-855-Mediacom (1-855-633-4226)
Optimum https://www.optimum.net/support/contact-us
https://install.optimum.com/JointInstall
1-877-810-6750
Sparklight https://support.sparklight.com
1-877-692-2253
Spectrum https://www.spectrum.net/contact-us
https://activate.spectrum.net
1-833-267-6094
Xnity https://www.xnity.com/support/articles/activate-purchased-modem
http://xnity.com/activate
1-800-XFINITY (1-800-934-6489)
LED Description
Power • Solid white. The modem router is receiving power and is functioning
normally.
• Off. The modem router is not receiving power.
• Solid red. The modem router is too warm and might overheat.
Downstream • Solid amber. One downstream channel is locked.
• Solid white. Two or more downstream channels are locked.
• Blinking white. The modem router is scanning for a downstream channel.
• Off. No downstream channel is locked
Upstream • Solid amber. One upstream channel is locked.
• Solid white. Two or more upstream channels are locked.
• Blinking white. The modem router is scanning for a upstream channel.
• Off. No upstream channel is locked.
Online • Solid white. The modem router is online.
• Blinking white. The modem router is synchronizing with the cable
provider’s cable modem termination system (CMTS).
• Off. The modem router is ofine.
2.4 GHz radio • Solid white. The 2.4 GHz WiFi radio is operating.
• Blinking white. The modem router is sending or receiving WiFi trafc.
• Off. The 2.4 GHz WiFi radio is off
5 GHz radio • Solid white. The 5 GHz WiFi radio is operating.
• Blinking white. The modem router is sending or receiving WiFi trafc.
• Off. The 5 GHz WiFi radio is off.
LAN 1–4 The LED color indicates the connection speed: white for Gigabit Ethernet and
amber for 100 Mbps or 10 Mbps Ethernet.
• Solid. A powered-on device is connected to the port.
• Blinking. The port is sending or receiving trafc.
• Off. No device is connected to this port.
USB • Solid white. A USB device is connected and ready.
• Blinking white. A USB device is plugged in and trying to connect.
• Off. No USB device is connected
WiFi On/Off
button
Pressing this button for two seconds turns the WiFi radios on and off. If this LED
is lit, the WiFi radios are on. If this LED is off, the WiFi radios are turned off and
you cannot use WiFi to connect to the modem router.
WPS button This button lets you use WPS to join the WiFi network without typing the WiFi
password. The WPS LED blinks during this process and then lights solid.
Download the Nighthawk app to get started
For more information about the
Nighthawk app, visit Nighthawk-app.
com. Set up your modem router and
activate your Internet service with the
Nighthawk app.
If you don’t want to use the Nighthawk app, set up your modem router using
the instructions in Set up and activate using the modem router web interface.
BEFORE RETURNING THIS PRODUCT TO THE STORE FOR
ANY REASON, call NETGEAR Technical Support at
1-866-534-9377 or visit
https://kb.netgear.com/000061156/How-can-I-
troubleshoot-my-cable-modem.
LED Description
LED On/Off
button Pressing this button for two seconds turns the LEDs on and off.

1. Turn off and disconnect existing modems and routers.
If you are replacing a modem that is currently connected in your home,
unplug the modem and plug the new modem router into the same outlet.
2. Connect a coaxial cable.
Use a coaxial cable to connect the cable port on
the modem router to a cable wall outlet. Make
sure that the cable is tightly connected. We
recommend that you connect your cable modem
directly to a cable wall outlet.
If you must share the connection, use
a 3.5dB (1 to 2) splitter.
Set up and activate using the
modem router web interface
3. Connect the power adapter.
Connect the power adapter to the modem router and plug the power
adapter into a power outlet.
4. Wait for the Online LED to light solid white.
This process might take up to 10 minutes. When the cable modem comes
online, the Online LED stops blinking and lights solid white for at least a
minute.
After 10 minutes, if the Online LED doesn’t light solid, make sure that the
cable outlet is working, or call your Internet service provider (ISP) to make
sure you have service.
Note: When the Online LED lights solid, your modem router is not
connected to the Internet yet. You must connect a router or computer to your
cable modem, and then activate your cable modem with your cable Internet
provider.
5. Connect your computer or mobile device to the modem router with WiFi or
Ethernet.
• WiFi. Use the WiFi network name (SSID) and password on the product
label to connect.
• Ethernet. The computer must have an Ethernet port. Connect an Ethernet
cable to an Ethernet port on the modem router and the Ethernet port on
your computer.
6. Collect the following information:
• Your cable Internet provider (ISP) account information
• Cable modem model number, which is CAX25
• Cable modem serial number
• Cable modem MAC address
NETGEAR, Inc.
350 East Plumeria Drive
San Jose, CA 95134, USA
NETGEAR INTERNATIONAL LTD
Floor 1, Building 3
University Technology Centre
Curraheen Road, Cork,
T12EF21, Ireland
July 2020
7. Activate your Internet service:
The following table lists the activation contact information for cable Internet
providers that support your modem router.
Cable Internet
Provider
Activation Contact
Cox 1-888-556-1193
Mediacom 1-855-Mediacom (1-855-633-4226)
Optimum 1-877-810-6750
Sparklight 1-877-692-2253
Spectrum 1-833-267-6094
Xnity Visit https://register.xnity.com/ and follow the prompts to activate
Your ISP’s contact information might change. You can also nd the contact
information in your monthly Internet service billing statement.
Regulatory and Legal
For regulatory compliance information including the EU Declaration of Conformity, visit
https://www.netgear.com/about/regulatory/.
See the regulatory compliance document before connecting the power supply.
For NETGEAR’s Privacy Policy, visit https://www.netgear.com/about/privacy-policy.
By using this device, you are agreeing to NETGEAR’s Terms and Conditions at
https://www.netgear.com/about/terms-and-conditions. If you do not agree, return the device to your
place of purchase within your return period.
Note to CATV system installer: This reminder is provided to call the CATV systems installer’s attention
to Section 820-93 of the National Electrical Code, which provides guidelines for proper grounding
and, in particular species that coaxial cable shield shall be connected to the grounding system of the
building as close to the point of cable entry as practical.
Package contents
Cable modem router
Ethernet cable
Power
adapter
A sticker on your modem
router displays the preset
WiFi network name,
password, and QR code.
Your Preset Wireless Settings
WiFi Network Name (SSID):
Network Key (Password):
Power
adapter
Coaxial
cable
WPS
WiFi On/O
FOR POSITION ONLY
FOR POSITION ONLY
© NETGEAR, Inc., NETGEAR and the NETGEAR Logo are trademarks of NETGEAR, Inc. Any
non-NETGEAR trademarks are used for reference purposes only.