Component identification 10
• LFF LEDs and button
1
Flashing green (1 Hz/cycle per sec) = iLO is rebooting
Flashing amber = System degraded
Flashing red (1 Hz/cycle per sec) = System critical**
2
and system power LED*
Flashing green (1 Hz/cycle per sec) = Performing power on
sequence
Solid amber = System in standby
Off = No power present†
3
Solid green = Link to network
Flashing green (1 Hz/cycle per sec) = Network active
Off = No network activity
4
Flashing blue:
1 Hz/cycle per sec = Remote management or firmware upgrade
in progress
4 Hz/cycle per sec = iLO manual reboot sequence initiated
8 Hz/cycle per sec = iLO manual reboot sequence in progress
Off = Deactivated
*When all four LEDs described in this table flash simultaneously, a power fault has occurred. For more information,
see "Power fault LEDs (on page 11)."
**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 HPE ProLiant Pre-boot Health Summary when the server will
not power on. For more information, see the HPE iLO 4 User Guide on the Hewlett Packard Enterprise
website (http://www.hpe.com/info/ilo/docs).