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X8STi/X8STi-F/X8STi-3F/X8STi-LN4 User's Manual
LSI 1068E
NIC4 LED
JBMC1
Serial_Link-SGPIO
PinDenitions
Pin# Denition Pin Denition
1 NC 2 NC
3 Ground 4 DATA Out
5 Load 6 Ground
7 Clock 8 NC
T-SGPIO 0/1 & 3-SGPIO 0/1 Headers
Two T-SGPIO (Serial-Link General Pur-
pose Input/Output) headers are located
next to USB 6 and USB 7 connectors
on the motherboard. Additionally, two
3-SGPIO ports are also located next to
SAS Port 3 on the X8STi-3F motherboard.
These headers are used to communicate
with the enclosure management chip in
the system. See the table on the right for
pin denitions. Refer to the board layout
below for the locations of the headers.
NC: No Connections
A. T-SGPIO 0
B. T-SGPIO 1
C.3-SGPIO 0 (X8STi-3F)
D. 3-SGPIO 1 (X8STi-3F)
E. Alarm Reset
C
D
A
B
Alarm Reset
If three power supplies are installed and
Alarm Reset (JAR) is connected, the sys-
tem will notify you when any of the three
power modules fail. Connect JAR to a
micro-switch to turn off the alarm that is
activated when a power module fails. See
the table on the right for pin denitions.
Alarm Reset
PinDenitions
Pin Setting Denition
Pin 1 Ground
Pin 2 +5V
E