NETGEAR CM400 Manuals

NETGEAR Certified Refurbished C6300-100NAR DOCSIS 3.0 WiFi Cable Modem Router with AC1750 16x4 download speeds. Certified for Xfinity from Comcast, Spectrum, Cox, Cablevision & more NETGEAR Certified Refurbished C6300- 100NAR DOCSIS 3.0 WiFi Cable Modem Router with AC1750 16x4 download speeds. Certified for Xfinity from Comcast, Spectrum, Cox, Cablevision & more: TROUBLE SHOOTING STEPS I’m experiencing connectivity issues with my NETGEAR cable modem or modem router, how can I troubleshoot it? If you’re experiencing connectivity issues, follow these troubleshooting steps: 1. Contact your Internet service provider (ISP) to verify that your device is activated. If you never activated your cable modem or modem router, you must activate it using your ISP’s self-activation process. For more information about activating your cable modem or modem router, visit How do I activate my cable Internet service and cable modem or modem router?. To activate your Internet service: 1. Visit your cable Internet service provider’s website and follow the onscreen instructions to activate your Internet service. Note: You can find your cable Internet service provider’s contact information on your monthly Internet service billing statement.

Installation Cable Modem Model CM400 1. Connect a coaxial cable. Use a coaxial cable that is provided by your cable company to connect the cable port on the cable modem to a cable wall outlet or a line splitter. Note:  If Charter is your cable Internet provider, Charter recommends connecting your cable modem directly to a cable wall outlet. If you must use a splitter, use a splitter that is rated at 3.5 dBmv. Package Contents 2. Connect the power adapter. Connect the power adapter to the cable modem and plug the power adapter into an electrical outlet. The Power LED lights green. If the Power LED does not light, press the Power On/Off button. 4. Log in to the cable modem. Launch a web browser. The cable modem menu displays. If you do not see the cable modem menu, enter http://192.168.100.1 in the address field of the web browser. When prompted, enter admin for the user name and password for the password. 5. Set up your Internet service. For information about how to set up your Internet service, see the other side of this installation guide. 3. Connect a computer to the cable modem. Use an Ethernet cable to connect a computer to the Ethernet port on the cable modem. Cable Modem Ethernet cable Power adapter Coaxial cable (not included) Power adapter Cable modem Ethernet cable DRAFT

Quick Start High Speed Cable Modem Model CM400 Package Contents Cable modem Ethernet cable Power adapter Coaxial cable (not included) Power adapter Cable modem Ethernet cable Attachable feet 4. Connect the power adapter. Connect the power adapter to the cable modem and plug the power adapter into an electrical outlet. When the startup procedure is completed, the Power LED lights green. 6. Connect a computer to the cable modem. Use the Ethernet cable that is provided in the package to connect a computer to the Ethernet port on the cable modem. Reboot the computer. 5. Wait for the cable modem to come online. The cable modem comes online when the Internet LED stops blinking and lights solid green. This process might take up to 10 minutes. 3. Connect a coaxial cable. Use a coaxial cable that is provided by your cable company to connect the cable port on the cable modem to a cable wall outlet or a line splitter. Make sure that the cable is tightly connected. Note:  If Comcast XFINITY is your cable Internet provider, Comcast XFINITY recommends connecting your cable modem directly to a cable wall outlet. Note:  If Charter is your cable Internet provider, Charter recommends connecting your cable modem directly to a cable wall outlet. If you must use a splitter, use a splitter that is rated at 3.5 dBmv. 2. Turn off existing modems and routers. If you are replacing a modem that is currently connected in your home, unplug the modem and plug the new cable modem into the same outlet. 1. Collect your cable Internet provider information. Collect your cable account number, account phone number, and login information (your email address or user name and password). 7. Activate your Internet service. For information about how to activate your Internet service, see Activate Your Internet Service on the other side of this quick start guide. Note:  After you install and activate the cable modem you can disconnect the computer and connect a router to the cable modem. For more information see Connect a Router on the other side of this quick start guide. Computer

Quick Start High Speed Cable Modem Model CM400 Package Contents Cable modem Ethernet cable Power adapter Coaxial cable (not included) Power adapter Cable modem Ethernet cable Attachable feet 5. Wait for the Online LED to light green. This process might take up to 10 minutes. Note: When the Online LED lights, your cable modem is not connected to the Internet yet. You must activate your cable modem with your Internet service provider. 6. Connect your computer to the cable modem. Use an Ethernet cable to connect a computer to the Etherent port on the cable modem. Reboot the computer 1. Collect your cable Internet provider information. Collect your cable account number, account phone number, and login information (your email address or user name and password). 2. 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 cable modem into the same outlet. 3. Connect a coaxial cable. Use a coaxial cable that is provided by your cable company to connect the cable port on the cable modem to a cable wall outlet or a line splitter. Make sure that the cable is tightly connected. Note: If Comcast Xfinity is your cable Internet provider, Xfinity recommends connecting your cable modem directly to a cable wall outlet. 4. Connect the power adapter. Connect the power adapter to the cable modem and plug the power adapter into an electrical outlet. 7. Activate your Internet service. For information about how to activate your Internet service, see Activate Your Internet Service. Note: After you install and activate the cable modem you can disconnect the computer and connect a router to the cable modem. For more information see Connect a Router. Computer

350 East Plumeria Drive San Jose, CA 95134 USA September 2017 202-11412-03 High Speed Cable Modem Model CM400 User Manual