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†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 HPE ProLiant Pre-boot 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.
Power fault LEDs
The following table provides a list of power fault LEDs, and the subsystems that are affected. Not all power
faults are used by all servers.
Subsystem
System board
Processor
Memory
Riser board PCIe slots
FlexibleLOM
Removable HPE Flexible Smart Array
controller/Smart SAS HBA controller
System board PCIe slots
Power backplane or storage backplane
Power supply
Systems Insight Display LEDs
The Systems Insight Display LEDs represent the system board layout. The display enables diagnosis with the
access panel installed.
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UID button functionality
LED behavior
1 flash
2 flashes
3 flashes
4 flashes
5 flashes
6 flashes
7 flashes
8 flashes
9 flashes
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