Abit SI7, SI7-G (8). System Management Bus Header [SMB1], (9). Internal Audio Connectors [CD1, AUX1]

2-12 Chapter 2

(8). System Management Bus Header [SMB1]

This header is reserved for system management bus (SM bus). The SM bus is a specific implementation of an I2C bus. I2C 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.

(9). Internal Audio Connectors [CD1, AUX1]

These connectors connect to the audio output of internal CD-ROM drive or add-on card.

SI7 Series