User's Manual (1.0)

Chapter 5: Advanced Serverboard Setup
5-19
UID LED
Status
Color/State Status
Blue: On Unit Identied
Unit Identier Switch
A Unit Identier (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
switch and LED are described with JF1
connectors. Pressing a UID switch will
turn on both the rear and front UID LEDs.
Pressing a UID switch again will turn off
both LEDs. These UIDs provide easy
identication of a system unit that may be
in need of service.
Note: the UID can also be triggered via
IPMI. Refer to the IPMI User's Guide on
the Supermicro website.
UID Switch
Pin# Denition
1 Button In
2 Ground
3 Ground
4 Ground
Rear UID LED
The rear UID LED is located at LE4
on the backplane. This LED is used in
conjunction with the rear UID switch to
provide easy identication of a system that
might be in need of service.
UID LED
Status
Color/State OS Status
Blue: On Windows OS Unit Identied
Blue:
Blinking
Linux OS Unit Identied