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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.
USB Reset Cable
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 green.
This process might take up to 10 minutes. When the cable modem comes
online, the Online LED stops blinking and lights solid green 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 C6250
• Cable modem serial number
• Cable modem MAC address
USB Reset Cable
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
June 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
Xnity
Visit http://xnity.com/activate 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, species 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.
WPS
WiFi On/O
Power
adapter
Coaxial
cable