3Com 3CNJ90 Support from Your Network Supplier, Support from 3Com, Returning Products for Repair

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Appendix F: Contacting Technical Support

Support from Your Network Supplier

If you require additional assistance, consult your network supplier. Many suppliers are authorized 3Com service partners who are qual- ified to provide a variety of services, including network planning, installation, hardware maintenance, application training, and sup- port services.

When you contact your network supplier for assistance, have the following information ready:

Product model name, part number, and serial number

A list of system hardware and software, including revision levels

Diagnostic error messages

Details about recent configuration changes, if applicable

If you are unable to consult your network supplier, see the following section on how to contact 3Com.

Support from 3Com

If you are unable to obtain assistance from the 3Com online techni- cal resources or from your network supplier, 3Com offers technical telephone support services. To find out more about your support options, call the 3Com technical telephone support phone number: 847 262 0070

When you contact 3Com for assistance, have the following informa- tion ready:

Product model name, part number, and serial number

A list of system hardware and software, including revision levels

Diagnostic error messages

Details about recent configuration changes, if applicable

Returning Products for Repair

Before you send a product directly to 3Com for repair, you must first obtain an authorization number. Products sent to 3Com with- out authorization numbers will be returned to the sender unopened, at the sender’s expense. To obtain an authorization number, call: 847 262 0070

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Contents NJ90 Network Jack Page User Guide NJ90 Network Jack United States Government Legend Table of Contents Page NJ90 User Guide NJ90 Package ContentsNJ90 Description NJ90 Feature DescriptionInstall the NJ90 Network Jack NJ90 InstallationLED Description Set up the power supplyAppendix a NJ90 Specifications HardwareNetwork Interface Performance FeaturesEnvironment Standards ConformanceAppendix B Wall Outlet Dimensions Using an Integrated Switch with Power over Ethernet Appendix C Setting up the Power SupplyUsing a Single-port Ethernet Power Supply Using a Multi-port Ethernet Power SupplyUsing the 3Com Local Power Supply Component Purpose Installation InstructionsAppendix D Setting up the Network Cabling at Your Site Appendix E Troubleshooting the NJ90 Day Free Installation Support Online Technical ServicesAppendix F Contacting Technical Support Support from Your Network Supplier Support from 3ComReturning Products for Repair Installation Guide Limited Warranty Installation Guide Limited Warranty Page Page 3Com Corporation