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X9DRW-3LN4F+/3TF+ Motherboard User's Manual
Unit Identifier Switch
A Unit Identifier (UID) Switch and
two LED Indicators are located on
the motherboard. The UID Switch is
located next to the 10G_LAN 4 port
on the backplane. The Rear UID
LED (LE2) is located next to the UID
Switch. The Front Panel UID LED is
located at pins 7/8 of the Front Con-
trol Panel at JF1. Connect a cable
to pin 8 on JF1 for Front Panel UID
LED indication. When you press the
UID switch, both Rear UID LED and
Front Panel UID LED Indicators will
be turned on. Press the UID switch
again to turn off both LED Indicators.
These UID Indicators provide easy
identification of a system unit that
may be in need of service.
Note: UID can also be trig-
gered via IPMI on the moth-
erboard. For more informa-
tion on IPMI, please refer
to the IPMI User's Guide
posted on our website @
http://www.supermicro.com.
2
1
LAN4
LAN3
JUIDB1
UID
LAN
SXB1B
CTRL 2
JP7
JP6
1
LEM2
BMC
CTRL
BATTERY
CPLD
JBAT1
JBT1
Clock
CPU1
Intel
CLOSE 1st
PCH
I-SATA5
I-SATA4
JSD1
I-SATA3
JTPM1
I-SATA2
JF2
FAN4
I-SATA1
FAN5
I-SATA0
T-SGPIO2
LAN2
LAN1
VGA1
COM1
KB/MOUSE
USB0/1
Buzzer
IPMI_LAN
SP1
LAN
CTRL 1
X9DRW-3LN4F+
Rev. 1.20
CPU2
CLOSE 1st
OPEN 1st
JPW2
OPEN 1st
FAN3 FAN2
2-22
Pin#
1
2
3
4
Color/State OS Status
Blue: On
Windows OS
Blue:
Linux OS
Blinking
Ground
X
FP PWRLED
HDD LED
NIC1 Link LED
NIC2 Link LED
3
Blue+ (OH/Fan Fail/
PWR FaiL/UID LED)
Power Fail LED
Ground
Ground
1. UID Switch
2. Rear UID LED (LE2)
3. Front UID LED
UID Switch
Definition
Ground
Ground
Button In
Ground
UID LED (LE2)
Status
Unit Identified
Unit Identified
20
19
NMI
X
3.3 V
ID_UID_SW/3/3V Stby
NIC1 Activity LED
NIC2 Activity LED
Red+ (Blue LED Cathode)
3.3V
Reset
Reset Button
Power Button
PWR
2
1
1
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