Manual for SynactiX 1
Installation Instructions
4 pin SMBus Connector(SMBUS)
This connector allows you to connect SMBus devices. SMBus devices communicate by
means of the SMBus with an SMBus host and/or other SMBus devices. The SMBus or
System Management Bus is a specific implementation of an 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.
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 connector has
been closed once, the system will record the status and indicate the chassis has been
opened. You can receive this information from QDI ManageEasy software.
Audio/Modem Riser Interface Connector (AMR)
The AMR Interface Connector is the interface between the mainboard and the Audio/Modem
Riser card. The connector provides all necessary signals which supports several different
configurations of audio and modem in the system, such as audio and modem on the Riser,
audio on the mainboard and modem on the Riser, or no audio with modem on the Riser.
SynactiX 1 mainboard provides you with audio onboard solution, onboard audio can be
enabled/disabled. Either AMR (Audio/Modem Riser) card or MR (Modem Riser) card can be
used on this system. If you choose to use the audio on AMR card, the onboard audio can be
set as disabled. This software configurable AC’97 audio and modem system gives custom-
ers an advanced, multimedia solution at an extremely low price.
1
2
3
SMBDATA
SMBCLK
5VSB
GND
4
GND
Indicate signal
