Power indicator codes
Condition
CAUTION:
AC PSUs support both 240 V and 120 V input voltages with the exception of Titanium
PSUs, which support only 240 V. When two identical PSUs receive different input voltages, they
can output different wattages, and trigger a mismatch.
CAUTION:
If two PSUs are used, they must be of the same type and have the same maximum
output power.
NIC indicator codes
Each NIC on the back of the system has indicators that provide information about the activity and link status. The activity LED indicator
indicates if data is flowing through the NIC, and the link LED indicator indicates the speed of the connected network.
Figure 16. NIC indicator codes
1
link LED indicator
2
activity LED indicator
Table 12. NIC indicator codes
Status
Condition
Link and activity indicators are off
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 off
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 off
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 off
NIC identify is enabled through the NIC configuration utility.
Enhanced Preboot System Assessment
If you experience a problem with your system, run the system diagnostics before contacting Dell for technical assistance. The purpose of
running system diagnostics is to test your system hardware without requiring more equipment or risking data loss. If you are unable to fix
the problem yourself, service and support personnel can use the diagnostics results to help you solve the problem.
Dell Embedded system diagnostics
NOTE:
The Dell Embedded System Diagnostics is also known as Enhanced Preboot System Assessment (ePSA) diagnostics.
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Dell EMC PowerEdge T440 Installation and Service Manual
Diagnostic indicators
