3Com NJ90 Network Jack, User Manual

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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 the local
power supply, make sure you have an electrical outlet near the site
where the NJ90 will be installed.
Figure 8 - Using the 3Com Local Power Supply
To
Network
Jack
Network
switch
To network
hub/switch
Wiring closet
To electrical
outlet