Supermicro SuperServer SYS-511R-M User Manual page 60

Unit Identifier Switch (UID-SW): One button with two functions
A Unit Identifier (UID) switch and two LED Indicators are located on the motherboard. The
UID switch is located at JUIDB1. The UID LED (LED1) is located next to the UID switch.
When you press the switch, the LED will be turned on, which provides easy identification
of a system unit that may be in need of service. Press the switch again to turn off the LED
indicator. UID can also be triggered via BMC on the motherboard. For more information on
BMC, please refer to the BMC User's Guide posted on our website:
com/manuals/other/BMC_IPMI_X13_H13.pdf
Function User Input
Push Once
UID LED Indicator
Push Again
Push and hold for 6 seconds
BMC Reset
Push and hold for 12 seconds BMC will reset to factory default
Note: After pushing and holding the UID switch for 12 seconds, all BMC settings includ-
ing username and password will revert back to the factory default. Only the network
settings and FRU are retained.
UID Switch
Pin Definitions
Pin# Definition
1 Ground
2 Ground
G1 Button In
G2 Button In
Chapter 4: Motherboard Connections
Behavior
Turns on the UID LED
Turns off the UID LED
BMC will do a cold boot
UID LED Indicator State
LED Color
Blue Solid
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LED Activity
UID LED turns solid blue
UID LED turns off
BMC Hearbeat LED turns solid green
BMC Hearbeat LED turns solid green
Definition
Unit Identified