Asus A7V8X A7V8X User Manual - Page 46

Hardware information, Chassis intrusion connector 4-1 pin CHASSIS1, SMBus connector 6-1 - la specifications

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+5VSB_MB Chassis Signal GND 5. Chassis intrusion connector (4-1 pin CHASSIS1) This lead is for a chassis designed with intrusion detection feature. This requires an external detection mechanism such as a chassis intrusion sensor or microswitch. When you remove any chassis component, the sensor triggers and sends a high-level signal to this lead to record a chassis intrusion event. By default, the pins labeled "Chassis Signal" and "Ground" are shorted with a jumper cap. If you wish to use the chassis intrusion detection feature, remove the jumper cap from the pins. CHASSIS1 ® A7V8X A7V8X Chassis Alarm Lead 6. SMBus connector (6-1 pin SMB_CON1) This connector allows you to connect SMBus (System Management Bus) devices. Devices communicate with an SMBus host and/or other SMBus devices using the SMBus interface. SMBus is a specific implementation of an I2C bus, a multi-device bus that allows multiple chips to connect to the same bus and enable each one to act as a master by initiating data transfer. SMB_CON1 ® A7V8X 1 A7V8X SMBus Connector FLOATING SMBCLK Ground SMBDATA +3V 2-20 Chapter 2: Hardware information

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2-20
Chapter 2: Hardware information
5.
Chassis intrusion connector (4-1 pin CHASSIS1)
This lead is for a chassis designed with intrusion detection feature.
This requires an external detection mechanism such as a chassis
intrusion sensor or microswitch. When you remove any chassis
component, the sensor triggers and sends a high-level signal to this
lead to record a chassis intrusion event.
By default, the pins labeled “Chassis Signal” and “Ground” are shorted
with a jumper cap. If you wish to use the chassis intrusion detection
feature, remove the jumper cap from the pins.
6.
SMBus connector (6-1 pin SMB_CON1)
This connector allows you to connect SMBus (System Management
Bus) devices. Devices communicate with an SMBus host and/or other
SMBus devices using the SMBus interface. SMBus is a specific
implementation of an I
2
C bus, a multi-device bus that allows multiple
chips to connect to the same bus and enable each one to act as a
master by initiating data transfer.
A7V8X
A7V8X
Chassis Alarm Lead
CHASSIS1
+5VSB_MB
Chassis Signal
GND
A7V8X
A7V8X SMBus Connector
SMB_CON1
1
SMBCLK
Ground
SMBDATA
+3V
FLOATING