Table 1-2, System status leds, Figure 1-4 – Milan Technology MIL-SM4804G User Manual
Page 22: System leds

Introduction
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1
Figure 1-4 System LEDs
Table 1-2 System Status LEDs
LED
Condition
Status
PWR
On Green
The unit’s internal power supply is operating normally.
On Amber
The unit’s internal power supply has failed.
Off
The unit has no power connected.
Diag
On Green
The system diagnostic test has completed successfully.
Flashing Green
The system diagnostic test is in progress.
On Amber
The system diagnostic test has detected a fault.
RPS
Green
A redundant power supply is attached and is active.
Amber
A redundant power supply is attached but not active.
Off
There is no redundant power supply currently attached.
Stack Master
Flashing Amber
An initial power-on state during which the stack
configuration is detected.
Green
This switch is acting as the Master unit in the stack.
Amber
This switch is acting as a Slave unit in the stack.
Off
Switch is operating in standalone mode.
System LEDs