Chapter 2: Installation
2-17
X8DTU/-F
Rev. 2.01
1
2
1. Rear UID Switch & LED
2. Front Control Panel
3. Front UID Switch
4. Front UID LED
Unit Identifi er Switches
Two Unit Identifi er (UID) Switches and two
LED Indicators are located on the mother-
board. The Rear UID Switch (JUID) is located
next to LAN 2 port on the backplane. The
Front Panel UID Switch is located at Pin 13
of the Front Control Panel. Connect a cable
to Pins 13/14 of JF1 for Front Panel UID
Switch support. The Front Panel UID LED
is located at Pin 7 of JF1, and the Rear UID
LED is located at LE2. When you press the
front or rear 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 identifi cation of a system unit
that may be in need of service.
Note:
UID can also be triggered
via IPMI on the X8DTU-F moth-
erboard. For more information on
IPMI, please refer to the IPMI User's
Guide posted on our website @
http://www.supermicro.com/sup-
port/manuals/.
UID Switch
Pin# Defi nition
1
Ground
2
Ground
3
Button In
4
Ground
1
Power Button
Blue+ (OH/Fan Fail/
PWR FaiL/UID LED
1
NIC1 Link LED
Reset Button
2
Power Fail LED
HDD LED
FP PWRLED
Reset
PWR
3.3 V
ID_UID_SW/3/3V Stby
Red+ (Blue Led Cathode)
Ground
Ground
19
20
3.3V
X
Ground
NMI
X
NIC2 Link LED
NIC2 Active LED
NIC1 Active LED
UID LED (LED 2)
Status
Color/State OS Status
Blue: On
Windows OS
Unit Identifi ed
Blue:
Blinking
Linux OS
Unit Identifi ed
3
4
