Asus CUSL2K User Manual download pdf (Page 38)

38 ASUS CUSL2K User’s Manual

Connectors

3. H/W SETUP

3. HARDWARE SETUP

18) 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.

CUSL2K

CUSL2K SMBus Connector

SMB

SMBCLK

Ground SMBDATA

+5V

19) 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.

CUSL2K

CUSL2K Chassis Open Alarm Lead

ACHA

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Asus CUSL2K User Manual Page 38