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Chapter 4: Motherboard Connections
Unit Identifier Switch/UID LED Indicator
A Unit Identifier (UID) switch and an LED indicator are located on the motherboard. The
UID switch is located at UID SW. The UID LED is located next to the UID switch. When you
press the UID switch, the UID LED will be turned on. Press the UID switch again to turn off
the LED indicator. The UID Indicator provides easy identification of a system unit that may
be in need of service.
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/support/manuals/
.
UID LED
Pin Definitions
Color
Status
Blue: On
Unit Identified
Speaker/Buzzer
On the JD1 header, pins 1-4 are for the external speaker and pins 3-4 are for the buzzer.
Speaker Connector
Pin Definitions
Pin Setting
Definition
Pins 1-4
Speaker
Pins 3-4
Buzzer
Chassis Intrusion
A Chassis Intrusion header is located at JL1 on the motherboard. Attach the appropriate cable
from the chassis to the header to inform you when the chassis is opened.
Chassis Intrusion
Pin Definitions
Pins
Definition
1
Intrusion Input
2
Ground
