Asus E500-PI CUSL2-M User Manual - Page 38

ASUS CUSL2-M User's Manual, SMB Connector 5-1 pin SMB, Chassis Intrusion Lead 2-pin ACHA

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3. H/W SETUP Connectors 3. HARDWARE SETUP 19) SMB Connector (5-1 pin SMB) This connector allows you to connect SMBus (System Management Bus) devices. SMBus devices communicate by means of the SMBus with an SMBus host and/or other SMBus devices. SMBus is a specific implementation of an I2C bus, which is a multi-device bus; that is, multiple chips can be connected to the same bus and each one can act as a master by initiating data transfer. CUSL2-M ® CUSL2-M SMBus Connector +3V SMBDATA Ground SMBCLK 1 SMB 20) Chassis Intrusion Lead (2-pin ACHA) This lead is for a chassis designed for chassis intrusion detection. After-market toggle switches may also be installed to the chassis panel or on any removable components. Two wires should be available from the chassis to connect to this lead. When any chassis component is removed, the contact should open and the motherboard will record a chassis intrusion event. The event can then be processed by software such as LDCM. If the chassis intrusion lead is not used, a jumper cap must be placed over the pins to close the circuit. CUSL2-M ® CUSL2-M Chassis Open Alarm Lead ACHA 38 ASUS CUSL2-M User's Manual

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38
ASUS CUSL2-M User’s Manual
Connectors
3. H/W SETUP
3. HARDWARE SETUP
19) SMB Connector (5-1 pin SMB)
This connector allows you to connect SMBus (System Management Bus) de-
vices. SMBus devices communicate by means of the SMBus with an SMBus
host and/or other SMBus devices. SMBus is a specific implementation of an
I2C bus, which is a multi-device bus; that is, multiple chips can be connected to
the same bus and each one can act as a master by initiating data transfer.
CUSL2-M SMBus Connector
SMB
CUSL2-M
SMBCLK
Ground
SMBDATA
+3V
1
20) Chassis Intrusion Lead (2-pin ACHA)
This lead is for a chassis designed for chassis intrusion detection. After-market
toggle switches may also be installed to the chassis panel or on any removable
components. Two wires should be available from the chassis to connect to this
lead. When any chassis component is removed, the contact should open and the
motherboard will record a chassis intrusion event. The event can then be pro-
cessed by software such as LDCM. If the chassis intrusion lead is not used, a
jumper cap must be placed over the pins to close the circuit.
CUSL2-M Chassis Open Alarm Lead
CUSL2-M
ACHA