System power LED definitions
The system power LED is located on the compute module Power On/Standby button.
System power LED Definition
Off No power present
Solid amber System is in standby
Flashing green (1 Hz/cycle per sec) Performing power on sequence
Solid green System on
NVDIMM LED identification
Item LED description LED color
1 Power LED Green
2 Function LED Blue
NVDIMM-N LED combinations
State Definition NVDIMM-N Power LED
(green)
NVDIMM-N Function
LED (blue)
0 AC power is on (12V rail) but the NVM
controller is not working or not ready.
On Off
1 AC power is on (12V rail) and the NVM
controller is ready.
On On
2 AC power is off or the battery is off (12V
rail off).
Off Off
3 AC power is on (12V rail) or the battery is
on (12V rail) and the NVDIMM-N is active
(backup and restore).
On Flashing
NVDIMM Function LED patterns
For the purpose of this table, the NVDIMM-N LED operates as follows:
• Solid indicates that the LED remains in the on state.
• Flashing indicates that the LED is on for 2 seconds and off for 1 second.
• Fast-flashing indicates that the LED is on for 300 ms and off for 300 ms.
74 Component and LED identification