Page 3 - Ethernet Switch
User Guide NJ90 Network Jack 3CNJ90 4-port 10/100 Mbps Unmanaged Ethernet Switch http://www.3com.com/ http://www.3com.com/productreg 150000038600A R01 Published February 2003
Page 5 - Table of Contents; Contents
Table of Contents Contents 1. NJ90 Package Contents 1 2. NJ90 Description 2 3. NJ90 Installation 3 Appendix A: NJ90 Specifications 5 B: Wall Outlet Dimensions 7 C: Setting up the Power Supply 8 D: Setting up the Network Cabling at Your Site 12 E: Troubleshooting the NJ90 13 F: Contacting Technical S...
Page 7 - NJ90 User Guide; NJ90 Package Contents
1 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...
Page 10 - LED
Installation Guide 4 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 L...
Page 11 - Appendix A: NJ90 Specifications; NJ90 Dimension
Appendix A: NJ90 Specifications 5 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 net- working devices, such as computers, printers, Voice over IP (VoIP) telephones, and scanners, to be ...
Page 13 - Appendix B: Wall Outlet Dimensions
Appendix B: Wall Outlet Dimensions 7 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. Figure 4 - Wall Outlet (NEMA-WD6) Dimensions 2.8125" (71.44 mm) 3.28125" (83.31 mm) referen...
Page 14 - Appendix C: Setting up the Power Supply; ) Using an Integrated Switch with Power over Ethernet
Installation Guide 8 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 ...
Page 16 - ) Using the 3Com Local Power Supply
Installation Guide 10 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 th...
Page 18 - Commercial Building Telecommunications
Installation Guide 12 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 pro...
Page 19 - Appendix E: Troubleshooting the NJ90
Appendix E: Troubleshooting the NJ90 13 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 syste...
Page 20 - Appendix F: Contacting Technical Support; 0 Day Free Installation Support
Installation Guide 14 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 publica- tion. For the most recent information, ...
Page 23 - into the local language is not provided; Com Corporation
17 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, Aus- tralia, Canada (except Quebec), Ireland, New Z...