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S
S
UPER
ERVER 6028R-T/6028R-TT User's Manual
Unit Identifier Switch/UID LED
Indicator
A Unit Identifier (UID) switch and an
LED indicator are provided on the
motherboard. The rear UID switch is
located next to the VGA port on the
backplane. The front UID switch is
located on pin 13 of the JF1 header.
The rear UID LED (LE1) is located
next to the UID switch and the front
UID LED is located on pin 7 on JF1.
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.
5-9
Jumper Settings
Explanation of Jumpers
To modify the operation of the
serverboard, jumpers can be used
to choose between optional settings.
Jumpers create shorts between two
pins to change the function of the con-
nector. Pin 1 is identified with a square
solder pad on the printed circuit board.
See the serverboard layout pages for
jumper locations.
Note: On a two-pin jumper, "Closed"
means the jumper is on both pins and
"Open" means the jumper is either on
only one pin or completely removed.
Pin#
1
2
3
4
Color/State Status
Blue: On
Connector
5-20
UID Switch
Definition
Ground
Ground
Button In
Ground
UID LED
Status
Unit Identified
3
2
Pins
Jumper
3
2
Setting
1
1
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