NIC indicator codes
Figure 3. NIC indicators
1. link indicator 2. activity indicator
Table 4. NIC indicators
Convention Indicator pattern Description
A Link and activity indicators 
are OFF
The NIC is not connected to the network.
B Link indicator is green The NIC is connected to a valid network at its maximum 
port speed (1 Gbps).
C Link indicator is yellow The NIC is connected to a valid network at less than its 
maximum port speed.
D Activity indicator is flashing 
green
Network data is being sent or received.
Power indicator codes for power supply unit
Press the self-diagnostic button to perform a quick health check on the power supply unit (PSU) of the 
system.
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