SUPER MICRO Computer X7SBL-LN1/LN2 - Manual (Page 40)

2-22
X7SBL-LN1/LN2 User’s Manual
A. PWR Fault
B. PWR SMB
Power SMB Connector
Power SMB Connector (PW4) is used
to monitor PWR supply, fan and system
temperature. See the table on the right
for pin defi nitions.
PWR SMB
Pin Defi nitions
Pin# Defi nition
1 Clock
2 Data
3 PWR Fail
4 Ground
5 +3.3V
Power Fault (PWR Supply
Failure)
Connect a cable from your power sup-
ply to the Power Fail (PW3) header
to provide a warning in the event of a
power supply failure. This warning sig-
nal is passed through the PWR_LED
pin to indicate of a power failure on the
chassis. See the table on the right for
pin defi nitions.
Note: This feature is only available when using
Super Micro redundant power supplies.
PWR Supply Fail
Pin Defi nitions
Pin# Defi nition
1 PWR 1: Fail
2 PWR 2: Fail
3 PWR 3: Fail
4 Signal: Alarm Reset
B A