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Unit Identifier Switch/UID LED Indicator
A rear Unit Identifier (UID) switch (JUIDB1) and a rear LED Indicator (UID-LED) are located on
the rear side of the motherboard. The front UID LED is located on Pin 7 of the Front Control
Panel (JFP1). When you press the UID switch, both front and rear UID LED indicators will
be turned on. Press the UID switch again to turn off the LED indicators. The UID Indicators
provide 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
supermicro.com.
UID Switch
Pin Definitions
Pin#
Definition
1
Button In
2
GND
3
GND
4
GND
5
GND
LED Indicator
Color
Blue: On
2
1
JUIDB1
UID-LED
LAN
JBT1
CTRL
LAN
CTRL
PCH
LED6301
BMC
JTPM1
M.2-PCH
3
JCOM1
JFP1
FAN3
JPWR2
JPWR3
LED1
I-SGPIO1
UID-LED
Status
Unit Identified
VGA
BT1
JNVME3
LAN1/2
LAN3
USB 0/1 (3.0)
CLOSE 1st
CPU
OPEN 1st
FAN1
JPWR1
FAN2
37
Chapter 2: Installation
Front Control Panel
1
2
PWR
Power Button
Reset
Reset Button
3.3V
UID
7
8
1. UID Switch
2. Rear UID LED
3. Front UID LED
http://www.
Ground
3
BMC_UID_LED
HDD LED
PWR LED
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