HP DL580 - Power supply LED

Component identification 12
Power supply LED
Power LED Status
Off No AC power to power supply units. Check the AC power cord.
Off
AC is present. Standby output is on, output is disabled. Further
indicated by the front panel LED.
Off
Power supply failure (includes overvoltage and overtemperature) further
indicated by the Systems Insight Display LEDs.
Green
AC is present. Standby output is on, power supply DC output is on and
OK.