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Chapter 9 Troubleshooting and FAQs
38
LED Function Indicators
LED Meaning
ACT/LNK
On
The adapter and switch are receiving power; the cable
connection between the switch and adapter is good.
ACT/LNK
Off
The adapter and switch are not receiving power or there
is a driver configuration problem.
If the LED is off:
•
Make sure power is connected to the PC. If power is
connected and the LED is still off:
•
Make sure the WOL cable is attached and power is
applied to the computer.
•
Make sure the network cable is attached at both ends.
•
Make sure you’ve loaded the network drivers.
•
Check all connections at the adapter and the switch and
make sure both ends are connected.
•
Try another port on the switch.
•
Make sure the duplex mode setting on the adapter
matches the setting on the switch.
•
Make sure you have the correct type of cable between the
adapter and the hub. 100BASE-TX requires two pairs.
Some hubs require a crossover cable, while others
require a straight-through cable.
•
Make sure you’ve loaded the correct network drivers.
ACT/LNK
Flashing
The adapter is sending or receiving network data. The
frequency of the flashes varies with the amount of
network traffic.
If the ACT/LNK LED does not flash, the cause could be:
•
The network may be idle. Try accessing a server.
•
The adapter may not be transmitting or receiving data.
Try another adapter.
•
Make sure you’re using two-pair cable for TX wiring.
100 On Operating at 100 Mbps.
100 Off Operating at 10 Mbps.