Справочник Пользователя для 3com nj90

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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. Expanding port connec-

tions with the 3Com Network Jack is a less expensive and less dis-

ruptive alternative to running additional cabling. Also, the 3Com 

Network Jack is installed in the wall, making it more secure and out 

of the way than deploying a remote desktop switch.
The NJ90 Network Jack allows up to four networking devices, such as 

computers, printers, Voice over IP (VoIP) telephones, and scanners, 

each to be connected to the network via its own Ethernet port.
The NJ90 needs no software to operate and no configuration. All 

ports feature 10/100 Mbps auto-negotiation, which configures the 

NJ90 Network Jack for 10 Mbps or 100 Mbps connections automati-

cally.
Before you begin installation, register your product at: 

www.3com.com/support

1. NJ90 Package Contents

- Single Pack  & Multi Pack

The NJ90 Network Jack is available in single and 20-packs. Before 

you begin the installation, make sure you familiarize yourself with 

the following items, which are included with the NJ90:
• NJ90  Unit

• 6x32 screws (2 per NJ90) for mounting the NJ90 to the wall or

office cubicle

• RJ-45 Male-to-Male coupler cable (1 per NJ90) for connecting

the NJ90 unit to the Network Ethernet cable (required only in

case your network cable is terminated with a female RJ-45 con-

nector)

• User Guide (1 per package)