Power Led; System Status Led; Table 34. Power Led Indicator States - Intel S5500WB12V Specification

Intel® Server Board S5500WB TPS
7.3.5

Power LED

The green power LED is active when the system DC power is on. The power LED is controlled
by the BIOS. The power LED reflects a combination of the state of system (DC) power and the
system ACPI state. The following table identifies the different states that the power LED can
assume.
7.3.6

System Status LED

Note: The system status LED state shows the state for the current, most severe fault. For
example, if there was a critical fault due to one source and a non-critical fault due to another
source, the system status LED state would be solid on (the critical fault state).
The system status LED is a bicolor LED. Green (status) shows a normal operation state or a
degraded operation. Amber (fault) shows the system hardware state and overrides the
green status.
The Integrated BMC-detected state and the state from the other controllers, such as the SCSI /
SATA hot-swap controller state, are included in the LED state. For fault states monitored by the
Integrated BMC sensors, the contribution to the LED state follows the associated sensor state,
with the priority going to the most critical state currently asserted.
When the server is powered down (transitions to the DC-off state or S5), the Integrated BMC is
still on standby power and retains the sensor and front panel status LED state established prior
to the power-down event.
The following table maps the system state to the LED state.
Revision 1.9

Table 34. Power LED Indicator States

State ACPI
Power off No
Power on No
S5 Yes
S1 Sleep Yes
S0 Yes
Intel order number E53971-008
Connector/Header Locations and Pin-out
Power LED
Off
Solid on
Off
~1 Hz blink
Solid on
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