T-GPIO1/2
PinDenitions
Pin# Denition Pin Denition
1 NC 2 NC
3 Ground 4 DATA Out
5 Load 6 Ground
7 Clock 8 NC
A
A. T_GPIO1
B. T_GPIO2
C. Power SMB
C
B
T-GPIO Headers
Two GPIO (Serial-Link General Pur-
pose Input/Output) headers are located
at J7 and J8 on the motherboard. These
headers are used to communicate with
the Serial-Link System Monitoring chip
on the backplane. See the table on the
right for pin denitions. Refer to the
board layout below for the locations of
the headers.
Note: NC= No Connections
Power SMB (I
2
C) Connector
Power SMB (I
2
C) Connector (JPI
2
C1)
monitors the status of the power supply,
fan and system temperature. See the
table on the right for pin denitions.
PWR SMB
PinDenitions
Pin# Denition
1 Clock
2 Data
3 PWR Fail
4 Ground
5 +3.3V