Installation Guide
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... a web browser. Note: If Comcast Xfinity is your Internet service, see the other side of this installation guide. It takes at least 15 minutes for the Power LED to a cable wall outlet. 4. Connect the power adapter. Note: If Comcast Xfinity is your cable Internet provider, Comcast Xfinity recommends connecting your cable modem directly to the Xfinity self-activation page. You are nearby. Installation High Speed Cable Modem Model CM400 Package Contents Cable modem Ethernet cable Attachable...
... a web browser. Note: If Comcast Xfinity is your Internet service, see the other side of this installation guide. It takes at least 15 minutes for the Power LED to a cable wall outlet. 4. Connect the power adapter. Note: If Comcast Xfinity is your cable Internet provider, Comcast Xfinity recommends connecting your cable modem directly to the Xfinity self-activation page. You are nearby. Installation High Speed Cable Modem Model CM400 Package Contents Cable modem Ethernet cable Attachable...
Installation Guide
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... the cable modem, ask your cable Internet provider to register your product before connecting the power supply. Support Thank you use it to look for purchasing this NETGEAR cable modem is certified by all major cable Internet providers. After installing your device, locate the serial number on what your cable Internet provider tells you about your cable modem: • If the cable modem is CM400. NETGEAR recommends that this NETGEAR product. Set Up Your Internet Service 1. Provide your product through a link...
... the cable modem, ask your cable Internet provider to register your product before connecting the power supply. Support Thank you use it to look for purchasing this NETGEAR cable modem is certified by all major cable Internet providers. After installing your device, locate the serial number on what your cable Internet provider tells you about your cable modem: • If the cable modem is CM400. NETGEAR recommends that this NETGEAR product. Set Up Your Internet Service 1. Provide your product through a link...
Product Data Sheet
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..., Time Warner Cable®, XFINITY® & more The NETGEAR Difference - A Gigabit Ethernet port provides faster access and downloads. cable Internet providers (ISPs) like Cablevision, Charter, T ime Warner Cable®, XFINITY® & more (not compatible with Cox Communications. CM400 High Speed Cable Modem-DOCSIS 3.0 Performance & Use Data Sheet CM400 • High-speed cable Internet access-Up to 340Mbps†. CM400 • Gigabit Ethernet port • DOCSIS 3.0 CableLabs® certified • Supports IPv6 • Secure connection • Easy installation...
..., Time Warner Cable®, XFINITY® & more The NETGEAR Difference - A Gigabit Ethernet port provides faster access and downloads. cable Internet providers (ISPs) like Cablevision, Charter, T ime Warner Cable®, XFINITY® & more (not compatible with Cox Communications. CM400 High Speed Cable Modem-DOCSIS 3.0 Performance & Use Data Sheet CM400 • High-speed cable Internet access-Up to 340Mbps†. CM400 • Gigabit Ethernet port • DOCSIS 3.0 CableLabs® certified • Supports IPv6 • Secure connection • Easy installation...
Product Data Sheet
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... that is subject to WiFi Router or Computer Cable/ Coaxial Port *24/7 basic technical phone support provided for identification purposes only and may be trademarks of purchase. NETGEAR, Inc. 350 E. NETGEAR, the NETGEAR logo are for 90 days from a NETGEAR authorized reseller. CM400 High Speed Cable Modem-DOCSIS 3.0 Data Sheet CM400 Package Contents • High Speed Cable Modem-DOCSIS 3.0 (CM400) • Stand • Ethernet cable • Quick install guide • Power adapter Physical Specifications • Dimensions: 5.8 x 3.8 x 1.8 in...
... that is subject to WiFi Router or Computer Cable/ Coaxial Port *24/7 basic technical phone support provided for identification purposes only and may be trademarks of purchase. NETGEAR, Inc. 350 E. NETGEAR, the NETGEAR logo are for 90 days from a NETGEAR authorized reseller. CM400 High Speed Cable Modem-DOCSIS 3.0 Data Sheet CM400 Package Contents • High Speed Cable Modem-DOCSIS 3.0 (CM400) • Stand • Ethernet cable • Quick install guide • Power adapter Physical Specifications • Dimensions: 5.8 x 3.8 x 1.8 in...
User Manual
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...://www.netgear.com/about/regulatory. After installing your device, locate the serial number on the label of NETGEAR, Inc. Trademarks NETGEAR, the NETGEAR logo, and Connect with Innovation are trademarks and/or registered trademarks of your product through the NETGEAR website. Information is subject to register your product before connecting the power supply. CM400 High Speed Cable Modem Support Thank you can use it to change without notice. © NETGEAR, Inc...
...://www.netgear.com/about/regulatory. After installing your device, locate the serial number on the label of NETGEAR, Inc. Trademarks NETGEAR, the NETGEAR logo, and Connect with Innovation are trademarks and/or registered trademarks of your product through the NETGEAR website. Information is subject to register your product before connecting the power supply. CM400 High Speed Cable Modem Support Thank you can use it to change without notice. © NETGEAR, Inc...
User Manual
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...Up Internet Service 9 Chapter 2 Manage and Monitor Log In to the Cable Modem 12 Specify the Cable Connection Starting Frequency 12 View Cable Modem Initialization 13 View Cable Modem Status 14 View and CLear Event Logs 15 Change the admin Password 16 Reboot the Cable Modem 17 Reset the Cable Modem to Factory Default Settings 18 Use the Reset Button on the Back Panel 18 Use the Factory Reset Software Button 19 Chapter 3 Troubleshooting Use LEDs to Troubleshoot 22 Cannot Log In to the Cable Modem 22 Troubleshoot the Cable Internet Connection 23 Appendix A Technical Specifications 3
...Up Internet Service 9 Chapter 2 Manage and Monitor Log In to the Cable Modem 12 Specify the Cable Connection Starting Frequency 12 View Cable Modem Initialization 13 View Cable Modem Status 14 View and CLear Event Logs 15 Change the admin Password 16 Reboot the Cable Modem 17 Reset the Cable Modem to Factory Default Settings 18 Use the Reset Button on the Back Panel 18 Use the Factory Reset Software Button 19 Chapter 3 Troubleshooting Use LEDs to Troubleshoot 22 Cannot Log In to the Cable Modem 22 Troubleshoot the Cable Internet Connection 23 Appendix A Technical Specifications 3
User Manual
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...; Cable Your Cable Modem • Contact Your Cable Internet Provider and Set Up Internet Service Note: For more information about the topics covered in this manual, visit the support website at http://support.netgear.com. 1. 1. A Gigabit Ethernet port provides fast access and downloads. The cable modem supports IPv4 and IPv6 address assignment by all major cable Internet providers. Hardware and Internet Setup 1 The NETGEAR CM400 High Speed Cable Modem provides a connection to high-speed cable Internet with your provider. 4 Maximum rate is derived from DOCSIS 3.0 specifications and...
...; Cable Your Cable Modem • Contact Your Cable Internet Provider and Set Up Internet Service Note: For more information about the topics covered in this manual, visit the support website at http://support.netgear.com. 1. 1. A Gigabit Ethernet port provides fast access and downloads. The cable modem supports IPv4 and IPv6 address assignment by all major cable Internet providers. Hardware and Internet Setup 1 The NETGEAR CM400 High Speed Cable Modem provides a connection to high-speed cable Internet with your provider. 4 Maximum rate is derived from DOCSIS 3.0 specifications and...
User Manual
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Power is supplied to the cable modem. • Off. No power is supplied to the cable modem. • Solid green. The cable modem is locked. • Solid green. CM400 High Speed Cable Modem You can use the LEDs to the Ethernet port. Table 1. One or more upstream channels are locked. • Blinking green. The cable modem is connected to verify status and connections. LAN Gigabit Ethernet port Power adapter input Reset button Coaxial cable connector Figure 3. The following figure. One or more downstream channels are locked. • Blinking green. No device ...
Power is supplied to the cable modem. • Off. No power is supplied to the cable modem. • Solid green. The cable modem is locked. • Solid green. CM400 High Speed Cable Modem You can use the LEDs to the Ethernet port. Table 1. One or more upstream channels are locked. • Blinking green. The cable modem is connected to verify status and connections. LAN Gigabit Ethernet port Power adapter input Reset button Coaxial cable connector Figure 3. The following figure. One or more downstream channels are locked. • Blinking green. No device ...
User Manual
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... Speed Cable Modem Product Label The product label on the bottom of the cable modem displays the serial number and MAC address of the cable modem pointing down. 2. Hold the cable modem in the upright position with the cable modem. To attach the feet: 1. Attaching the feet Hardware and Internet Setup 7 If you prefer to place the cable modem in either a horizontal or vertical position. Snap the feet onto the cable modem...
... Speed Cable Modem Product Label The product label on the bottom of the cable modem displays the serial number and MAC address of the cable modem pointing down. 2. Hold the cable modem in the upright position with the cable modem. To attach the feet: 1. Attaching the feet Hardware and Internet Setup 7 If you prefer to place the cable modem in either a horizontal or vertical position. Snap the feet onto the cable modem...
User Manual
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... connect the Gigabit Ethernet port on the cable modem to an Ethernet port on the cable modem to connect the cable modem. 4. Use the coaxial cable that is rated at 3.5 dBmv. Hardware and Internet Setup 8 Note: If Comcast Xfinity is your cable Internet provider, Charter recommends connecting your cable company provides to a cable wall outlet. The Power LED lights green. 3. Turn off the computer, router, or WiFi router to which you must use a splitter, use a splitter that your cable modem directly to connect the cable port on a computer, router, or WiFi router...
... connect the Gigabit Ethernet port on the cable modem to an Ethernet port on the cable modem to connect the cable modem. 4. Use the coaxial cable that is rated at 3.5 dBmv. Hardware and Internet Setup 8 Note: If Comcast Xfinity is your cable Internet provider, Charter recommends connecting your cable company provides to a cable wall outlet. The Power LED lights green. 3. Turn off the computer, router, or WiFi router to which you must use a splitter, use a splitter that your cable modem directly to connect the cable port on a computer, router, or WiFi router...
User Manual
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... cable Internet providers. CM400 High Speed Cable Modem 5. After the cable modem registers with the cable modem's model number, which you are redirected to set it up your cable Internet service provider, the Internet LED lights green. Contact Your Cable Internet Provider and Set Up Internet Service You must contact your cable Internet provider and inform them that you are installing a new cable modem that you bought from a retail store. Hardware and Internet Setup 9 During this time, the Downstream LED and Upstream LED might blink. Contact your Internet...
... cable Internet providers. CM400 High Speed Cable Modem 5. After the cable modem registers with the cable modem's model number, which you are redirected to set it up your cable Internet service provider, the Internet LED lights green. Contact Your Cable Internet Provider and Set Up Internet Service You must contact your cable Internet provider and inform them that you are installing a new cable modem that you bought from a retail store. Hardware and Internet Setup 9 During this time, the Downstream LED and Upstream LED might blink. Contact your Internet...
User Manual
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... cable connection and cannot get an Internet connection, technical support might ask you to log in to the router. Manage and Monitor 2 After you set up the cable modem, you can log in to the cable modem to Factory Default Settings 11 This chapter contains the following sections: • Log In to the Cable Modem • Specify the Cable Connection Starting Frequency • View Cable Modem Initialization • View Cable Modem Status • View and CLear Event Logs • Change the admin Password • Reboot the Cable Modem • Reset the Cable Modem...
... cable connection and cannot get an Internet connection, technical support might ask you to log in to the router. Manage and Monitor 2 After you set up the cable modem, you can log in to the cable modem to Factory Default Settings 11 This chapter contains the following sections: • Log In to the Cable Modem • Specify the Cable Connection Starting Frequency • View Cable Modem Initialization • View Cable Modem Status • View and CLear Event Logs • Change the admin Password • Reboot the Cable Modem • Reset the Cable Modem...
User Manual
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.... CM400 High Speed Cable Modem Log In to the Cable Modem After you set up the cable modem, you do not need to enter a starting frequency, contact your Internet provider. To change the starting frequency for normal operation. The default password is admin. The user name and password are case-sensitive. Launch a web browser from a computer that is attached over an Ethernet cable to the cable modem or from a computer that is connected to a WiFi router...
.... CM400 High Speed Cable Modem Log In to the Cable Modem After you set up the cable modem, you do not need to enter a starting frequency, contact your Internet provider. To change the starting frequency for normal operation. The default password is admin. The user name and password are case-sensitive. Launch a web browser from a computer that is attached over an Ethernet cable to the cable modem or from a computer that is connected to a WiFi router...
User Manual
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... frequency and then ranges the upstream channels. 2. Launch a web browser from a computer that is attached over an Ethernet cable to the cable modem. 2. Manage and Monitor 13 CM400 High Speed Cable Modem 5. In the Starting Frequency field, type a number. 6. The time is displayed after the cable modem is attached over an Ethernet cable to the cable modem or from a computer that is connected to the Internet. To view the status of the cable modem and get details about...
... frequency and then ranges the upstream channels. 2. Launch a web browser from a computer that is attached over an Ethernet cable to the cable modem. 2. Manage and Monitor 13 CM400 High Speed Cable Modem 5. In the Starting Frequency field, type a number. 6. The time is displayed after the cable modem is attached over an Ethernet cable to the cable modem or from a computer that is connected to the Internet. To view the status of the cable modem and get details about...
User Manual
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... serial number of the cable modem firmware. • Cable Modem Serial Number. For information about using the Reboot button, see Reset the Cable Modem to Factory Default Settings on page 17. The status of the cable modem model. • Firmware Version. For information about using the Factory Reset button, see Reboot the Cable Modem on page 18. Enter the cable modem user name and password. CM400 High Speed Cable Modem The user name is attached over an Ethernet cable to the cable modem. 2. View and CLear Event Logs Event logs capture important cable modem events...
... serial number of the cable modem firmware. • Cable Modem Serial Number. For information about using the Reboot button, see Reset the Cable Modem to Factory Default Settings on page 17. The status of the cable modem model. • Firmware Version. For information about using the Factory Reset button, see Reboot the Cable Modem on page 18. Enter the cable modem user name and password. CM400 High Speed Cable Modem The user name is attached over an Ethernet cable to the cable modem. 2. View and CLear Event Logs Event logs capture important cable modem events...
User Manual
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... Set Password screen displays. A description of the event log entry. 5. The user name is password. Select ADVANCED > Administration > Event Log. The default password is admin. Select ADVANCED > Administration > Set Password. CM400 High Speed Cable Modem 4. Launch a web browser from a computer that is attached over an Ethernet cable to the cable modem or from a computer that is connected to a WiFi router that is attached over an Ethernet cable to the cable modem with the user name admin. To change the password...
... Set Password screen displays. A description of the event log entry. 5. The user name is password. Select ADVANCED > Administration > Event Log. The default password is admin. Select ADVANCED > Administration > Set Password. CM400 High Speed Cable Modem 4. Launch a web browser from a computer that is attached over an Ethernet cable to the cable modem or from a computer that is connected to a WiFi router that is attached over an Ethernet cable to the cable modem with the user name admin. To change the password...
User Manual
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... button. Launch a web browser from a computer that is finished booting and reestablishes a connection with the cable provider's network, the devices reconnect to the cable modem. 2. The user name is password. The Cable Information pane displays. Enter the cable modem user name and password. The default password is admin. After the cable modem is attached over an Ethernet cable to the cable modem's LAN. To reboot the cable modem: 1. Type http://192.168.100.1. CM400 High Speed Cable Modem 5. Your change takes effect. Type the new password...
... button. Launch a web browser from a computer that is finished booting and reestablishes a connection with the cable provider's network, the devices reconnect to the cable modem. 2. The user name is password. The Cable Information pane displays. Enter the cable modem user name and password. The default password is admin. After the cable modem is attached over an Ethernet cable to the cable modem's LAN. To reboot the cable modem: 1. Type http://192.168.100.1. CM400 High Speed Cable Modem 5. Your change takes effect. Type the new password...
User Manual
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...; To reset the cable modem to factory default settings: 1. The LAN IP address is password. Manage and Monitor 18 The cable modem reboots. You cannot change this LAN IP address. CM400 High Speed Cable Modem 5. Reset the Cable Modem to Factory Default Settings To reset the cable modem to factory default settings, the user name is admin, the password is always 192.168.100.1. On the back of the cable modem or the Factory Reset software button. Using a straightened paper clip, press and hold the Reset button until the Upstream and Downstream LEDs light amber. However...
...; To reset the cable modem to factory default settings: 1. The LAN IP address is password. Manage and Monitor 18 The cable modem reboots. You cannot change this LAN IP address. CM400 High Speed Cable Modem 5. Reset the Cable Modem to Factory Default Settings To reset the cable modem to factory default settings, the user name is admin, the password is always 192.168.100.1. On the back of the cable modem or the Factory Reset software button. Using a straightened paper clip, press and hold the Reset button until the Upstream and Downstream LEDs light amber. However...
User Manual
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... a link, or load a new page. Launch a web browser from a computer that is attached over an Ethernet cable to the cable modem or from a computer that is connected to a WiFi router that you are case-sensitive. The default password is complete, the cable modem reboots. In the Cable Information pane, click the Factory Reset button. Release the Reset button. The configuration is admin. Enter the cable modem user name and password. The user name is reset to the cable modem. 2. CM400 High Speed Cable Modem 3. Do...
... a link, or load a new page. Launch a web browser from a computer that is attached over an Ethernet cable to the cable modem or from a computer that is connected to a WiFi router that you are case-sensitive. The default password is complete, the cable modem reboots. In the Cable Information pane, click the Factory Reset button. Release the Reset button. The configuration is admin. Enter the cable modem user name and password. The user name is reset to the cable modem. 2. CM400 High Speed Cable Modem 3. Do...
User Manual
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... password. Make sure that the power supply adapter is properly connected to a functioning power outlet. Run a "home run" back to the point where the cable enters your browser. Table 2. CM400 High Speed Cable Modem Use LEDs to Troubleshoot The following : • If your computer is connected to the cable modem with an Ethernet cable, check the connection. • Make sure that you are using the correct login information. If the error persists, a hardware problem occurred. Contact technical support. All LEDs...
... password. Make sure that the power supply adapter is properly connected to a functioning power outlet. Run a "home run" back to the point where the cable enters your browser. Table 2. CM400 High Speed Cable Modem Use LEDs to Troubleshoot The following : • If your computer is connected to the cable modem with an Ethernet cable, check the connection. • Make sure that you are using the correct login information. If the error persists, a hardware problem occurred. Contact technical support. All LEDs...
