HP NC3122 Fast Ethernet Server Adapter - Manual (Page 10)

1-2 Compaq NC3122 Fast Ethernet Server Adapter User Guide
LED Indicators
The following table describes the NC3122 Server Adapter LED indicators located on the front
panel of the adapter.
Table 1-1
LED Operations for the NC3122 Adapter
LED Display Description
LNK On A link to the adapter is established. The adapter is receiving power and the cable
connection is secure.
Off No link is established to the adapter. The adapter is not receiving power, the cable
connection is faulty, or the driver is not loaded.
ACT On or flashing The adapter is sending or receiving network data. The frequency of the flashes
varies with the amount of network traffic.
Off No network data is being sent or received. The adapter is not receiving power, the
cable connection is faulty, or the driver is not loaded.
On The adapter is sending or receiving network data at 100 Mb/s. 100 Mb/s
Off The adapter is sending or receiving network data at 10 Mb/s.
UTP Category 3 or Category 5 Cable
The NC3122 Server Adapter can use existing Category 3 (or better) cable to deliver 10 Mb/s
operation, and Category 5 (or better) cable to deliver 100 Mb/s operation.
For information about connecting cables, see “Connecting the Network Cable” in Chapter 2.
IMPORTANT: If you are using the NC3122 Server Adapter in a residential environment, you must use a
Category 5 (or better) cable. For more information on 100Base-TX wiring requirements and limitations,
see the text files on the Compaq Software and Documentation CD.