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The LNK LED doesn't light.
Ensure that you've loaded the network drivers.
Verify all connections at the adapter and the hub/switch.
Try another port on the hub/switch.
Ensure that the duplex mode setting on the adapter matches the setting on the hub/switch.
Make sure that 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.
The ACT LED doesn't light.
Ensure that you've loaded the correct network drivers.
The network may be idle. Try accessing a server.
If the adapter isn't transmitting or receiving data. Try another adapter.
