3com NJ240FX 用户指南
About the NJ240FX
3
About the NJ240FX
The following diagram shows the front and rear views of the IntelliJack:
1
RJ-45 switched PAN
(personal area
network) ports
(personal area
network) ports
Four 10/100 Mbps auto-negotiation ports, which the
IntelliJack configures for 10 Mbps or 100 Mbps connections
automatically.
IntelliJack configures for 10 Mbps or 100 Mbps connections
automatically.
2
Port LEDs and
corresponding port
numbers
corresponding port
numbers
Indicate network link status of each of the four RJ-45 PAN
ports.
ports.
3
LAN LED
Indicates the link status of the LAN connection (fiber uplink).
For more information, see “Checking the LEDs.”
For more information, see “Checking the LEDs.”
4
Power LED
Indicates IntelliJack power status (green). For more
information, see “Checking the LEDs.”
information, see “Checking the LEDs.”
5
Pass-through port
connector
connector
The pass-through port allows for connection to a separate
network. The data or voice traffic on this port does not flow
through the switch.
network. The data or voice traffic on this port does not flow
through the switch.
6
Power-forwarding
LED
LED
Lights when an IEEE 802.3af powered device is plugged into
Port #1 of the NJ240FX and power is being forwarded to that
device. For more information, see “Checking the LEDs.”
Port #1 of the NJ240FX and power is being forwarded to that
device. For more information, see “Checking the LEDs.”
7
AC power socket
The IntelliJack is powered by an internal power supply.
8
Fiber optic
transceiver
transceiver
Connects the NJ240FX switched RJ-45ports to the fiber optics
network.
network.
9
Pass-through port
cable
cable
The pass-through port allows for connection to a separate
network. The data or voice traffic on this port does not flow
through the switch.
network. The data or voice traffic on this port does not flow
through the switch.