Abit WB6 User Manual page 21

Installing the Motherboard
TSYS1 Header
SMBUS: System Management Bus Connector
Note: Watch the pin position and the orientation
CD_IN1 Header
The TSYS1 is for you to connect an
additional thermistor to detect
temperature in the location of your choice.
You can buy the thermistor at an electronics
store, ask for a 10K thermistor (NTC type)
which should be OK. Please don't use too
long of a lead wire for the thermistor.
This connector is reserved for system
management bus (SMBus). The SMBus is a
2
specific implementation of an I C bus. I
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.
This connector is used for the internal CD-
ROM drive audio cable connection
User's Manual
2-9
the
2
C is