Manual for P4N series
4 Pin SMBus Connector(SMBUS)
This connector allows you to connect SMBus devices. SMBus devices communicate
through the SMBus with an SMBus host and/or other SMBus devices. The SMBus or
System Management Bus is a specific implementation of I
2
C bus, which is a multi-master
bus, that is, multiple chips can be connected to the same bus and each one can act as a
master by initiating data transfer.
Chapter 2
Chassis Security Switch (CHSSEC)
The connector connects to the chassis security switch on the case. The system can
detect the chassis intrusion through the status of this connector. If the case has been
opened , the system will record the status and indicate the chassis has been opened. You
can receive this information from QDI ManageEasy software.
1
2
3
SMBDATA
SMBCLK
5VSB
GND
4
SMBUS
GND
Indicate signal
1
CHSSEC
