45
Chapter 2: Installation
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, which is next to the VGA port on the back panel. The UID LED
(LED2) 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.
UID Switch
Pin Definitions
Pin#
Definition
1
Ground
2
Ground
3
Button In
4
Button In
UID LED
Pin Definitions
Color
Status
Blue: On
Unit Identified
COM1
BIOS LICENSE
BAR CODE
A2SDi-LN4F
REV:1.02
DESIGNED IN USA
JPH1
1
JGP1
1
JBT1
JSMB1
JD1
C
A
LEDT1
C
A
LEDT3
LEDT2
A
C
LEDT4
A
C
LED1
1
JTGLED2
1
JLANLED1
1
JTGLED1
OSC1
JI2C2
1
JI2C1
1
JPTG1
JPG1
JPL1
1
JPME2
1
JWD1
JBR1
JPV1
BT1
SRW1
JL1
1
JRT3
JR
T4
LED2
A
C
C
A
LEDM1
JMP1
PRESS FIT
1
JMD1
SRW4
SRW3
1
JSD1
FANA
1
FAN3
1
1
FAN1
1
FAN2
JPI2C1
I-SATA1
I-SATA0
I-SATA3
I-SA
TA2
JF1
1
JTPM1
JPW1
PCI-E 3.0 X4 / I-SATA
IPMI LAN
MANUFACTURING MODE
LAN7
LAN8
LAN1
LAN3
DIMMB1
DIMMB2
DIMMA2
DIMMA1
AL
W
AYS POPULA
TE DIMMx1 FIRST
Intel Atom SoC
FCBGA1310
CPU
USB4/5
USB2/3
USB0/1 (3.0)
LAN4
LAN2
LAN5
LAN6
VGA
SUPERDOM
PWR
ON
JF1
CPU SLOT7 PCI-E 3.0 X4
RST
FAIL
PS
LED
UID
NIC
2
NIC
1
LED
HDD
PWR
LED
1-2:ENABLE
2-3:DISABLE
JPG1:
2-3:DISABLE 1-2:ENABLE
VGA
JPL1:
2-3:DISABLE
1-2:ENABLE
JI2C2:
1-2:ENABLE
2-3:DISABLE
JI2C1:
UID
2-3:ME
1-2:NORMAL
JPME2:
JPH1
Intel
i350-AM4
BMC
AST2400
1
1. UID Switch
2. UID LED
2
