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Chapter 4: Motherboard Connections
UID LED
A UID LED (UID LED1) is located on the I/O backpanel, to the right of the VGA port. This
LED turns on when initiated via the UID Switch or IPMI to easily identify a system in a rack.
Note: UID can also be triggered via IPMI on the motherboard. For more information on IPMI,
please refer to the IPMI User's Guide posted on our website at http://www.supermicro.com
BMC Heartbeat LED
A BMC Heartbeat LED is located at LEDM1 on the motherboard. When LEDM1 is blinking,
the BMC is functioning normally. See the table below for more information.
BMC Heartbeat LED State
LED Color Denition
Green: Blinking BMC: Normal
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