Item Description Status
3 NIC status LED*
Solid green = Link to network
Flashing green (1 Hz/cycle per sec) = Network active
Off = No network activity
4 Power On/Standby button and
system power LED*
Solid green = System on
Flashing green (1 Hz/cycle per sec) = Performing
power on sequence
Solid amber = System in standby
Off = No power present†
*When all four LEDs described in this table flash simultaneously, a power fault has occurred. For more
information, see "Power fault LEDs."
**If the health LED indicates a degraded or critical state, review the system IML or use iLO to review the
system health status.
†Facility power is not present, power cord is not attached, no power supplies are installed, power supply
failure has occurred, or the power button cable is disconnected.
UID button functionality
The UID button can be used to display the Server Health Summary when the server will not power on. For
more information, see the latest HPE iLO User Guide on the Hewlett Packard Enterprise website.
Front panel LED power fault codes
The following table provides a list of power fault codes, and the subsystems that are affected. Not all power
faults are used by all servers.
Subsystem LED behavior
System board 1 flash
Processor 2 flashes
Memory 3 flashes
Riser board PCIe slots 4 flashes
FlexibleLOM 5 flashes
Removable HPE Smart Array SR Gen10 controller 6 flashes
System board PCIe slots 7 flashes
Power backplane or storage backplane 8 flashes
Power supply 9 flashes
Systems Insight Display LEDs
The Systems Insight Display LEDs represent the system board layout. The display enables diagnosis with the
access panel installed.
UID button functionality 109
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