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Unit Identifier Switch
A Unit Identifier (UID) switch and two LED
indicators are provided on the serverboard.
The rear UID LED (LE4) is located next to the
rear UID switch. The front panel UID LED is on
pins 7/8 of JF1. Connect a cable to pins 7/8 on
JF1 for front panel UID indication. Pressing the
UID switch will turn on both the rear and front
UID LEDs. Pressing the UID switch again will
turn off both LEDs. These UIDs provide easy
identification of a system unit that may be in
need of service.
Note:
When pushing the UID switch, ensure not
to touch the UID LED which is under the
switch.
The UID can also be triggered via IPMI.
Please refer to the IPMI User's Guide posted
on our Website.
Overheat LED/Fan Fail
The JOH1 header is used to connect an LED
indicator to provide warnings of chassis
overheating and fan failure. This LED will
blink when a fan failure occurs. Refer to the
tables on right for pin definitions.
Power SMB (I
C) Connectors
2
Power System Management Bus (I
tors (JI
C1/JI
C2) monitor power supply, fan
2
2
and system temperatures. See the table on
the right for pin definitions.
Chapter 5: Advanced Serverboard Setup
Color/State OS Status
Blue: On
Blue:
Blinking
C) Connec-
2
5-15
UID LED (LE4)
Status
Windows OS
Unit Identified
Linux OS
Unit Identified
UID Switch
Pin#
Definition
1
Button In
2
Ground
3
Ground
4
Ground
Overheat LED
Pin Definitions
Pin#
Definition
1
5vDC
2
OH Active
OH/Fan Fail LED
Status
State
Message
Solid
Overheat
Blinking
Fan Fail
PWR SMB
Pin Definitions
Pin#
Definition
1
Clock
2
Data
3
PWR Fail
4
Ground
5
+3.3V
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