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Hardware Setup 2-13
(9). System Management Bus Headers
This header is reserved for system management bus (SM bus). The SM bus is a specific implementation
of an I
2
C bus. I
2
C is a multi-master bus, which means that multiple chips can be connected to the same
bus and each one can act as a master by initiating a data transfer. If more than one master simultaneously
tries to control the bus, an arbitration procedure decides which master gets priority.
(10). Internal Audio Connectors
These connectors connect to the audio output of internal CD-ROM drive or add-on card.
User’s Manual