*The figure is provided for Illustration purposes only. The design may slightly vary in different
systems.
Power Supply Unit Status Front LED Assignments
LED Behavior Description Action Required
Solid Green
All power supply units are connected and
running normally.
N/A
Solid Amber One or both of the power supplies are not
operational or not powered up/ the power
cord is disconnected.
Make sure the power cord is plugged in
and active. If the problem resumes,
refer to Troubleshooting for further
instructions.
Power Supply Unit Status Rear LED Assignments
LED
Behavior
Description Action Required
Solid Green The PSU is running normally. N/A
Flashing
Green 1Hz
AC Present, Standby – On, Main Output -
Off
Refer to Troubleshooting. For further assistance,
call your NVIDIA representative.
Flashing
Amber 1Hz
PSU warning - events where the PSU
continues to operate
Solid Amber PSU failure (voltage, current, temperature
or fan related issue)
Off No AC power to all power supplies. Plug in the AC cor
Unit Identification LED
The UID LED is a debug feature, that the user can use to find a particular system within a cluster by
turning on the UID blue LED.
To activate the UID LED on a switch system, run:
switch (config) # led MGMT uid on
To verify the LED status, run:
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