NJ90 Network Jack User Guide 3CNJ90
User Guide NJ90 Network Jack 3CNJ90 4-port 10/100 Mbps Unmanaged Ethernet Switch http://www.3com.com/ http://www.3com.
3Com Corporation 5500 Great America Parkway Santa Clara, California 95052-8145 U.S.A. Copyright © 2003 3Com Corporation. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without written permission from 3Com Corporation.
Table of Contents Contents 1. NJ90 Package Contents 2. NJ90 Description 3. NJ90 Installation 1 2 3 Appendix A: NJ90 Specifications B: Wall Outlet Dimensions C: Setting up the Power Supply D: Setting up the Network Cabling at Your Site E: Troubleshooting the NJ90 F: Contacting Technical Support 5 7 8 12 13 14 Limited Warranty & Regulatory Compliance Information 17 List of Illustrations Fig.1 Fig.2 Fig.3 Fig.4 Fig.5 Fig.6 Fig.7 Fig.
NJ90 User Guide The 3Com Network Jack is a platform that provides connectivity at the edge of the network infrastructure. The NJ90 Network Jack, is a member of this family of products. The NJ90 Network Jack is a 4-port, un-managed Fast Ethernet switch that fits into most standard data port openings. The NJ90 Network Jack quadruples port connections where a single port (and cable) already exists in the wall.
Installation Guide 2. NJ90 Description The following diagram shows the front view and the rear view of the NJ90 (see descriptions below) 3 1 4 5 6 2 Figure 1 - NJ90 Feature Description 1 Four Switching Ports 2 LED’s 3 4 Uplink Port Hook 5 Power socket 6 Strain Relief Channel 2 Allow up to four devices to be connected to the network. Indicates network connection and activity status. Indicates NJ90 power status.
3. NJ90 Installation 3. NJ90 Installation 3.1 Install the NJ90 Network Jack. 3.2 Set up the power supply 3.1 - Install the NJ90 Network Jack Wall Wall To wiring closet To wiring closet Network cable Network cable RJ-45 coupler cable Figure 2 - NJ90 Installation Step 1: If the end of the network cable from the wiring closet is terminated with a female RJ-45 connector, use the RJ-45 coupler cable included in the package to connect the Network jack to the network cable (recommended installation).
Installation Guide Step 3: Mount the NJ90 Unit to the Wall or Cubicle Outlet with the screws provided. 3.2 - Set up the power supply : Selecting the power scheme and installing it: See Appendix C: Setting up the Power Supply (p.8). You can verify the NJ90 Network Jack Installation by checking the LED’s. LED Description •On - The NJ90 is connected to the network and a link has been established. (Lan) (Power) 4 •Blinking - Network Activity. •Off - There is no connection to the network.
Appendix A: NJ90 Specifications Appendix A: NJ90 Specifications The NJ90 is a 4-port, un-managed Fast Ethernet switch that fits into most standard data port openings. The NJ90 allows up to four networking devices, such as computers, printers, Voice over IP (VoIP) telephones, and scanners, to be connected to the network via one Ethernet port. The NJ90 needs no software to operate and requires no configuration.
Installation Guide Performance Auto-negotiation Environment Operating temperature Storage temperature Operating humidity Storage humidity Operating Altitude Storage Altitude Standards Conformance Communication speed (10 Mbps or 100 Mbps) and duplex mode (full or half) is determined through auto-negotiation with the attached devices. The NJ90 attempts to negotiate the fastest connection possible (100 Mbps full-duplex).
Appendix B: Wall Outlet Dimensions Appendix B: Wall Outlet Dimensions Make sure the wall or cubicle opening where the NJ90 is being installed complies with the NEMA-WD6 standard, as described below. 1.750" (44.45 mm) 2.8125" (71.44 mm) 3.28125" (83.
Installation Guide Appendix C: Setting up the Power Supply Power to the NJ90 can be supplied one of the following ways: 1. Over the network via an integrated switch that supports Power over Ethernet. 2. Over the network via a multi-port Ethernet power supply. 3. Over the network via a single-port Ethernet power supply. 4. Locally via a 3Com local power supply. Before you begin the installation, determine which type of power supply the NJ90 will use.
Appendix C: Setting up the Power Supply 2) Using a Multi-port Ethernet Power Supply To use a multi-port Ethernet power supply, you must connect the power supply to your network, as shown in figure 6 on page 9. The multi-port Ethernet power supply from 3Com connects to an existing Ethernet or Fast Ethernet infrastructure with standard Category 5 or Category 5e UTP cabling, and powers up to 24 NJ90 Network Jacks.
Installation Guide Network switch Wiring closet To electrical outlet To network hub/switch To Network Jack Figure 7 - Using a Single-port Ethernet Power Supply 4) Using the 3Com Local Power Supply If your network does not support Power over Ethernet, or if you are not using a single-port or multi-port Ethernet power supply, you must purchase a local power supply from 3Com. To use the local power supply, make sure you have an electrical outlet near the site where the NJ90 will be installed.
Appendix C: Setting up the Power Supply Installation Instructions: 1. Plug the power cable into the Network Jack. 2. Route the power cable through the stain relief fixture. 3. Secure the local power supply and cable to the wall. 4. Plug the Local Power Supply into the power source. NOTE: Completing these procedures in sequence will reduce issues during the installation process. The NJ90 works with the following Power Supplies. Updated information is available online at www.3com.
Installation Guide Appendix D: Setting up the Network Cabling at Your Site The network cabling at your site (from the wiring closet to the wall or cubicle opening) may already be installed. If it is not, install the cabling following these general guidelines. CAUTION: It is recommended that a professional cable installer perform these procedures. Be sure to adhere to local safety and regulatory codes during the cable installation. 1. Connect one end of an Ethernet cable to your network.
Appendix E: Troubleshooting the NJ90 Appendix E: Troubleshooting the NJ90 If you encounter problems with the NJ90: 1. Verify the NJ90 is receiving power by viewing the Power LED (it should be lit). If the Power LED is not lit, make sure: • The other end of the network cable is plugged into a system that provides Power over Ethernet according to IEEE 802.3af, if using Power over Ethernet. • The Local Power Supply is plugged into the NJ90 and into a working electrical outlet, if using Local power supply.
Installation Guide Appendix F: Contacting Technical Support 3Com provides easy access to technical support information through a variety of services. This section describes these services. Information contained in this section is correct at time of publication. For the most recent information, 3Com recommends that you access the 3Com Corporation World Wide Web site: www.3com.com.
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 qualified to provide a variety of services, including network planning, installation, hardware maintenance, application training, and support services.
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3Com Corporation LIMITED WARRANTY The 3Com Corporation Limited Warranty and the Other Services described in this document supersede any such information that may be contained within your product user documentation. This warranty applies to customers located in the United States, Australia, Canada (except Quebec), Ireland, New Zealand, U.K.
Installation Guide 3Com makes no warranty or representation that its software products will meet Customer’s requirements or work in combination with any hardware or software products provided by third parties, that the operation of the software products will be uninterrupted or error free, or that all defects in the software products will be corrected.
LIMITED WARRANTY WARRANTIES EXCLUSIVE, WARRANTY DISCLAIMER: TO THE FULL EXTENT ALLOWED BY LAW, THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES, TERMS OR CONDITIONS, EXPRESS OR IMPLIED, EITHER IN FACT OR BY OPERATION OF LAW, STATUTORY OR OTHERWISE, INCLUDING, WITHOUT LIMITATION, WARRANTIES, TERMS OR CONDITIONS OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, SATISFACTORY QUALITY, CORRESPONDENCE WITH DESCRIPTION, NONINFRINGEMENT AND QUIET ENJOYMENT, ALL OF WHIC
Installation Guide or the limitation of liability for death or personal injury, so the above limitations and exclusions may be limited in their application to you. When the implied warranties are not allowed to be excluded in their entirety, they will be limited to the duration of the applicable written warranty. This warranty gives you specific legal rights which may vary depending on local law. GOVERNING LAW: This Limited Warranty shall be governed by the laws of the State of California, U.S.A.
3Com Corporation 5500 Great America Parkway, P.O. Box 58145, Santa Clara, CA 95052-8145 U.S.A. www.3com.
