Item Description Status
3 NIC status LED
1
• 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
1
• Solid green = System on
• Flashing green (1 Hz/cycle per sec) = Performing
power on sequence
• Solid amber = System in standby
• Off = No power present
3
1
When all four LEDs described in this table flash simultaneously, a power fault has occurred.
2
If the health LED indicates a degraded or critical state, review the system IML or use iLO to review the system health
status.
3
Facility power is not present, the 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 LED behavior
System board 1 flash
Processor 2 flashes
Memory 3 flashes
Riser board PCIe slots 4 flashes
FlexibleLOM 5 flashes
Removable HPE Flexible Smart Array
controller/Smart SAS HBA controller
6 flashes
System board PCIe slots 7 flashes
Power backplane or storage backplane 8 flashes
Power supply 9 flashes
14 UID button functionality
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