Installation Guide
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... outlet. If you are redirected to the Xfinity self-activation page. If you are nearby. After the cable modem registers with your Internet service. Installation High Speed Cable Modem Model CM400 Package Contents Cable modem Ethernet cable Attachable feet Power adapter 1. Connect the power adapter to the Ethernet port on your cable...
... outlet. If you are redirected to the Xfinity self-activation page. If you are nearby. After the cable modem registers with your Internet service. Installation High Speed Cable Modem Model CM400 Package Contents Cable modem Ethernet cable Attachable feet Power adapter 1. Connect the power adapter to the Ethernet port on your cable...
Installation Guide
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... number and MAC address on what your cable Internet provider tells you about /regulatory/. Provide your cable Internet provider with the cable modem, ask your cable Internet provider to your high-speed Internet service. • If the cable modem is CM400. For regulatory compliance information, visit http://www.netgear.com/about your cable modem: • If...
... number and MAC address on what your cable Internet provider tells you about /regulatory/. Provide your cable Internet provider with the cable modem, ask your cable Internet provider to your high-speed Internet service. • If the cable modem is CM400. For regulatory compliance information, visit http://www.netgear.com/about your cable modem: • If...
Product Data Sheet
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... 3.0 CableLabs® certified • Supports IPv6 • Secure connection • Easy installation Overview The NETGEAR CM400 High Speed Cable Modem provides a connection to your computer or wireless router for U.S. It is CableLabs® certified and with U.S. Cable Internet Services-DOCSIS® 3.0 is 8X faster than DOCSIS 2.0 • Save money over time by owning...
... 3.0 CableLabs® certified • Supports IPv6 • Secure connection • Easy installation Overview The NETGEAR CM400 High Speed Cable Modem provides a connection to your computer or wireless router for U.S. It is CableLabs® certified and with U.S. Cable Internet Services-DOCSIS® 3.0 is 8X faster than DOCSIS 2.0 • Save money over time by owning...
Product Data Sheet
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...® 3.0 specifications and actual throughput will vary depending on your Internet subscription with any future standards. Plumeria Drive, San Jose, CA 95134-1911 USA, 1-888-NETGEAR (638-4327), E-mail: info@NETGEAR.com, www.NETGEAR.com D-CM400-1 PAGE 2 OF 2 Warranty valid only when purchased from a NETGEAR authorized reseller. †Maximum rate is subject to change without notice...
...® 3.0 specifications and actual throughput will vary depending on your Internet subscription with any future standards. Plumeria Drive, San Jose, CA 95134-1911 USA, 1-888-NETGEAR (638-4327), E-mail: info@NETGEAR.com, www.NETGEAR.com D-CM400-1 PAGE 2 OF 2 Warranty valid only when purchased from a NETGEAR authorized reseller. †Maximum rate is subject to change without notice...
User Manual
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... Unpack Your Cable Modem 5 Front Panel 5 Back Panel 6 Product Label 7 Attach the Feet 7 Cable Your Cable Modem 8 Contact Your Cable Internet Provider and Set 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 ... 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
... Unpack Your Cable Modem 5 Front Panel 5 Back Panel 6 Product Label 7 Attach the Feet 7 Cable Your Cable Modem 8 Contact Your Cable Internet Provider and Set 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 ... 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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... 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 340 Mbps.1 The cable modem is derived from DOCSIS 3.0 specifications and actual throughput varies depending on your Internet subscription with speeds up to high-speed cable Internet with your provider. 4 This chapter covers...
... 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 340 Mbps.1 The cable modem is derived from DOCSIS 3.0 specifications and actual throughput varies depending on your Internet subscription with speeds up to high-speed cable Internet with your provider. 4 This chapter covers...
User Manual
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Package contents Power adapter Front Panel The cable modem provides status LEDs on the front. Power LED Upstream LED Ethernet LED Downstream LED Internet LED Figure 2. Cable modem front view Hardware and Internet Setup 5 CM400 High Speed Cable Modem Unpack Your Cable Modem Your package contains the following items. Cable modem Attachable feet Ethernet cable Figure 1.
Package contents Power adapter Front Panel The cable modem provides status LEDs on the front. Power LED Upstream LED Ethernet LED Downstream LED Internet LED Figure 2. Cable modem front view Hardware and Internet Setup 5 CM400 High Speed Cable Modem Unpack Your Cable Modem Your package contains the following items. Cable modem Attachable feet Ethernet cable Figure 1.
User Manual
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...table lists and describes each LED on . • Off. The cable modem is offline. No upstream channel is locked. • Solid green. CM400 High Speed Cable Modem You can use the LEDs to the cable modem. • Off. No downstream channel is locked. • Solid green...provider's cable modem termination system (CMTS). • Off. The cable modem is scanning for a downstream channel. • Off. Note: The Internet LED is supplied to verify status and connections. A device is supplied to the Ethernet port. LAN Gigabit Ethernet port Power adapter input Reset button Coaxial...
...table lists and describes each LED on . • Off. The cable modem is offline. No upstream channel is locked. • Solid green. CM400 High Speed Cable Modem You can use the LEDs to the cable modem. • Off. No downstream channel is locked. • Solid green...provider's cable modem termination system (CMTS). • Off. The cable modem is scanning for a downstream channel. • Off. Note: The Internet LED is supplied to verify status and connections. A device is supplied to the Ethernet port. LAN Gigabit Ethernet port Power adapter input Reset button Coaxial...
User Manual
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CM400 High Speed Cable Modem Product Label The product label on the bottom of the cable modem displays the serial number and MAC address of the ... modem. To attach the feet: 1. If you prefer to place the cable modem in either a horizontal or vertical position. Attaching the feet Hardware and Internet Setup 7 Product label Attach the Feet The cable modem functions well in the upright (vertical) position, attach the feet that come with the left side...
CM400 High Speed Cable Modem Product Label The product label on the bottom of the cable modem displays the serial number and MAC address of the ... modem. To attach the feet: 1. If you prefer to place the cable modem in either a horizontal or vertical position. Attaching the feet Hardware and Internet Setup 7 Product label Attach the Feet The cable modem functions well in the upright (vertical) position, attach the feet that come with the left side...
User Manual
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...The Power LED lights green. 3. Use the coaxial cable that is rated at 3.5 dBmv. Note: If Comcast Xfinity is your cable Internet provider, Charter recommends connecting your computer, router, or WiFi router. Ethernet cable Coaxial cable to the cable modem and plug the power adapter... into an electrical outlet. Note: If Charter is your cable Internet provider, Comcast Xfinity recommends connecting your cable modem: 1. CM400 High Speed Cable Modem Cable Your Cable Modem The cable modem provides a connection between your cable...
...The Power LED lights green. 3. Use the coaxial cable that is rated at 3.5 dBmv. Note: If Comcast Xfinity is your cable Internet provider, Charter recommends connecting your computer, router, or WiFi router. Ethernet cable Coaxial cable to the cable modem and plug the power adapter... into an electrical outlet. Note: If Charter is your cable Internet provider, Comcast Xfinity recommends connecting your cable modem: 1. CM400 High Speed Cable Modem Cable Your Cable Modem The cable modem provides a connection between your cable...
User Manual
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... modem that you are using a new cable modem. Even though an Internet connection is established, Internet service is available only after you set up your cable Internet provider, you bought from a retail store. Note: If Comcast Xfinity is CM400. Just launch a web browser. You are redirected to call. Contact ...com optimum.com/contactus.jsp Note: When you attempt to contact Cablevision online, you are directed to set it up your Internet service. CM400 High Speed Cable Modem 5. Turn on the network. During this time, the Downstream LED and Upstream LED might blink. Provide your...
... modem that you are using a new cable modem. Even though an Internet connection is established, Internet service is available only after you set up your cable Internet provider, you bought from a retail store. Note: If Comcast Xfinity is CM400. Just launch a web browser. You are redirected to call. Contact ...com optimum.com/contactus.jsp Note: When you attempt to contact Cablevision online, you are directed to set it up your Internet service. CM400 High Speed Cable Modem 5. Turn on the network. During this time, the Downstream LED and Upstream LED might blink. Provide your...
User Manual
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CM400 High Speed Cable Modem Cable Internet Provider Contact Information Charter 1-888-438-2427 install.charter.com Comcast 1-800-COMCAST (1-800-266-2278) comcast.com/activate/ Cox 1-877-891-2899 cox.com/... 7). 3. You can give you instructions to verify why the cable modem does not connect with the cable modem, ask your cable Internet provider to confirm that is not visible, your cable Internet provider can also find the contact number in your online status again. When asked, provide the cable modem's serial number...
CM400 High Speed Cable Modem Cable Internet Provider Contact Information Charter 1-888-438-2427 install.charter.com Comcast 1-800-COMCAST (1-800-266-2278) comcast.com/activate/ Cox 1-877-891-2899 cox.com/... 7). 3. You can give you instructions to verify why the cable modem does not connect with the cable modem, ask your cable Internet provider to confirm that is not visible, your cable Internet provider can also find the contact number in your online status again. When asked, provide the cable modem's serial number...
User Manual
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In the unlikely situation that you experience problems with the cable connection and cannot get an Internet connection, technical support might ask you to log in to the cable modem for normal operation. Manage and Monitor 2 After you set up the cable ...
In the unlikely situation that you experience problems with the cable connection and cannot get an Internet connection, technical support might ask you to log in to the cable modem for normal operation. Manage and Monitor 2 After you set up the cable ...
User Manual
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... The Cable Connection screen displays. Manage and Monitor 12 To log in to the cable modem, you need to enter a starting frequency, contact your Internet provider. To change the starting frequency for normal operation. The user name and password are case-sensitive. The BASIC Home screen displays. Specify... to the cable modem: 1. Enter the cable modem user name and password. Type http://192.168.100.1. The user name is password. CM400 High Speed Cable Modem Log In to the Cable Modem After you set up the cable modem, you do not need to specify this information...
... The Cable Connection screen displays. Manage and Monitor 12 To log in to the cable modem, you need to enter a starting frequency, contact your Internet provider. To change the starting frequency for normal operation. The user name and password are case-sensitive. The BASIC Home screen displays. Specify... to the cable modem: 1. Enter the cable modem user name and password. Type http://192.168.100.1. The user name is password. CM400 High Speed Cable Modem Log In to the Cable Modem After you set up the cable modem, you do not need to specify this information...
User Manual
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... of the cable modem initialization: 1. Scans and locks the downstream frequency and then ranges the upstream channels. 2. Type http://192.168.100.1. CM400 High Speed Cable Modem 5. Connects to the cable modem. 2. Click the Apply button. Obtains a WAN IP address for the cable modem. ... process: 1. Launch a web browser from a computer that is connected to a WiFi router that is attached over an Ethernet cable to the Internet. To view the status of the cable modem and get details about the downstream and upstream cable channel. A login screen displays. ...
... of the cable modem initialization: 1. Scans and locks the downstream frequency and then ranges the upstream channels. 2. Type http://192.168.100.1. CM400 High Speed Cable Modem 5. Connects to the cable modem. 2. Click the Apply button. Obtains a WAN IP address for the cable modem. ... process: 1. Launch a web browser from a computer that is connected to a WiFi router that is attached over an Ethernet cable to the Internet. To view the status of the cable modem and get details about the downstream and upstream cable channel. A login screen displays. ...
User Manual
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... using the Factory Reset button, see Reboot the Cable Modem on page 18. Type http://192.168.100.1. The default password is admin. CM400 High Speed Cable Modem The user name is password. The version of the cable modem certificate. Launch a web browser from a computer that ...8226; Cable Modem Serial Number. The version of the cable modem. • CM Certificate. If Not installed displays as the status, contact your cable Internet provider. The user name is password. A login screen displays. 3. Enter the cable modem user name and password. The serial number of the cable ...
... using the Factory Reset button, see Reboot the Cable Modem on page 18. Type http://192.168.100.1. The default password is admin. CM400 High Speed Cable Modem The user name is password. The version of the cable modem certificate. Launch a web browser from a computer that ...8226; Cable Modem Serial Number. The version of the cable modem. • CM Certificate. If Not installed displays as the status, contact your cable Internet provider. The user name is password. A login screen displays. 3. Enter the cable modem user name and password. The serial number of the cable ...
User Manual
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Troubleshooting 3 This chapter provides information about troubleshooting your cable modem. The chapter includes the following sections: • Use LEDs to Troubleshoot • Cannot Log In to the Cable Modem • Troubleshoot the Cable Internet Connection Note: NETGEAR provides helpful articles and documentation at support.netgear.com. 21 3.
Troubleshooting 3 This chapter provides information about troubleshooting your cable modem. The chapter includes the following sections: • Use LEDs to Troubleshoot • Cannot Log In to the Cable Modem • Troubleshoot the Cable Internet Connection Note: NETGEAR provides helpful articles and documentation at support.netgear.com. 21 3.
User Manual
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... outlet. Cannot Log In to the Cable Modem If you cannot access the cable modem from NETGEAR for troubleshooting. If you are secure at the cable modem and at the computer, router, or...connected hub or computer. • Be sure that your computer's IP address is on your cable Internet service. Internet LED is off and the • cable modem is connected to the cable wall jack. •...The default password is plugged in the range of the cable modem to its factory defaults. CM400 High Speed Cable Modem Use LEDs to Troubleshoot The following : • If your computer is...
... outlet. Cannot Log In to the Cable Modem If you cannot access the cable modem from NETGEAR for troubleshooting. If you are secure at the cable modem and at the computer, router, or...connected hub or computer. • Be sure that your computer's IP address is on your cable Internet service. Internet LED is off and the • cable modem is connected to the cable wall jack. •...The default password is plugged in the range of the cable modem to its factory defaults. CM400 High Speed Cable Modem Use LEDs to Troubleshoot The following : • If your computer is...
User Manual
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CM400 High Speed Cable Modem If the cable modem does not save changes you made, do the following: • When entering configuration settings, be caching the old configuration. Troubleshooting 23 The changes occurred, but the Internet LED lights green, register the cable MAC address or device MAC address ...your changes are lost. • Click the Refresh or Reload button in the web browser. Troubleshoot the Cable Internet Connection If your cable modem cannot access the Internet but the web browser might be sure to click the Apply button before moving to another screen, or your cable...
CM400 High Speed Cable Modem If the cable modem does not save changes you made, do the following: • When entering configuration settings, be caching the old configuration. Troubleshooting 23 The changes occurred, but the Internet LED lights green, register the cable MAC address or device MAC address ...your changes are lost. • Click the Refresh or Reload button in the web browser. Troubleshoot the Cable Internet Connection If your cable modem cannot access the Internet but the web browser might be sure to click the Apply button before moving to another screen, or your cable...
User Manual
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Technical Specifications A The following table lists the technical specifications for U.S. cable Internet services 24 Technical specifications Feature Power adapter Physical specifications Environmental Interface Memory Certifications Specification • Input: 110-120V, 47-...40°C) • Operating humidity: 90% maximum relative humidity, noncondensing • Local: 10/100/1000 RJ-45 Gigabit Ethernet port • Internet: Coaxial cable connector DOCSIS 3.0: Backward compatible with DOCSIS 2.0 • 128 MB Flash • 128 MB RAM CableLabs certified for the cable modem. Table ...
Technical Specifications A The following table lists the technical specifications for U.S. cable Internet services 24 Technical specifications Feature Power adapter Physical specifications Environmental Interface Memory Certifications Specification • Input: 110-120V, 47-...40°C) • Operating humidity: 90% maximum relative humidity, noncondensing • Local: 10/100/1000 RJ-45 Gigabit Ethernet port • Internet: Coaxial cable connector DOCSIS 3.0: Backward compatible with DOCSIS 2.0 • 128 MB Flash • 128 MB RAM CableLabs certified for the cable modem. Table ...