Table 6. NIC indicators
Convention Status Condition
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 or 10 
Gbps).
C Link indicator is amber 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 supply unit indicator codes
AC power supply units (PSUs) have an illuminated translucent handle that serves as an indicator and DC 
PSUs have an LED that serves as an indicator.  The indicator shows whether power is present or a power 
fault has occurred.
Figure 7. AC PSU status indicator
1. AC PSU status indicator/handle
Table 7. AC PSU status indicators
Convention Power indicator 
pattern
Condition
A Green A valid power source is connected to the PSU and the PSU is 
operational.
B Flashing green When the firmware of the PSU is being updated, the PSU handle 
flashes green.
23