User`s guide

5-32
NovaScale R422-E2/R422-INF-E2 Installation and User's Guide
SMB (I²C) Connector
System Management Bus (I2C) Connector (J18) moni-
tors power supply, fan and system temperatures. See
the table on the right for pin denitions.
PWRSMBPinDenitions
Pin# Denition
1 Clock
2 Data
3 PWR Fail
4 Ground
IPMB I²C SMB
A System Management Bus header for the IPMI slot is
located at IPMB. Connect the appropriate cable here to
use the IPMB I²C connection on your system.
A: PWR SMB
B: IPMB SMB
SMBHeaderPinDenitions
Pin# Denition
1 Data
2 Ground
3 Clock
4 No Connection