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.
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 Supply Fail
Pin Defi nitions
Pin# Defi nition
1PWR 1: Fail
2 PWR 2: Fail
3 PWR 3: Fail
4 Signal: Alarm Reset
Note: This feature is only available when using Super Micro redundant power supplies.
PWR SMB
Pin Defi nitions
Pin# Defi nition
1Clock
2Data
3PWR Fail
4Ground
5 +3.3V
BA
A. PWR Fault
B. PWR SMB
