Hard drive status indicator code Condition
Flashes green for three seconds, amber for three seconds, and 
then turns o after six seconds
Rebuild stopped.
NIC indicator codes
Each NIC on the back panel has indicators that provide information about the activity and link status. The activity LED indicator indicates if 
data is owing through the NIC, and the link LED indicator indicates the speed of the connected network.
Figure 9. NIC indicator codes
1 link LED indicator 2 activity LED indicator
Table 3. NIC indicator codes
Status Condition
Link and activity indicators are o The NIC is not connected to the network.
Link indicator is green and activity indicator is blinking green The NIC is connected to a valid network at its maximum port speed and 
data is being sent or received.
Link indicator is amber and activity indicator is blinking 
green
The NIC is connected to a valid network at less than its maximum port 
speed and data is being sent or received.
Link indicator is green and activity indicator is o The NIC is connected to a valid network at its maximum port speed and 
data is not being sent or received.
Link indicator is amber and activity indicator is o The NIC is connected to a valid network at less than its maximum port 
speed and data is not being sent or received.
Link indicator is blinking green and activity is o NIC identify is enabled through the NIC conguration utility.
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.
Dell PowerEdge C6400 Installation and Service Manual  
PowerEdge C6400 overview
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