Supermicro A+ Server AS-1115S-FWTRT User Manual page 59

UID LED Indicator (LED9)
The rear LED9 is located next to the UID switch. The front UID LED is located on the front
panel. When you press the UID switch, both rear LED9 and front UID LED indicators will
turn on. Press the UID switch again to turn off the LED indicators. Use this UID Indicator to
"mark" the system, so the system can be easily identified whether on the front or back (e.g.,
a system rack with multiple units installed). See also UID LED.
BMC Hearbeat LED (LEDBMC1)
A BMC Heartbeat LED is located at LEDBMC1 on the motherboard. When LEDBMC1 is
blinking, the BMC is functioning normally. See the table below for more information.
Onboard Power OK LED (LED8)
LED8 is an onboard power OK LED. When this LED8 is lit, it means the system is turned on
and all the system power rails are ready. When the system is turned off or any one of the
system power rails fail, this LED will turn off. Turn off the system and unplug the power cable
before removing or installing any component(s).
UID LED
LED Indicator
Color State Definition
Blue Solid On Unit Identified
None Off UID Off
BMC Heartbeat
LED State
Color State
Green Solid On
Green Blinking
Green Fast Blinking
Onboard Power
LED Indicator
LED Color Definition
Off System Off (power cable not connected)
Green System On, Power OK
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Chapter 4: Motherboard Connections
Definition
BMC is not ready
BMC Normal
BMC: Initializing