Abit SD7-53, User Manual

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Chapter 2
SD7-533 Motherboard
2-8
(3). FPIO2: IR Header (Infrared)
There is a specific orientation for pins 1 through 5,
attach the connector from the IR KIT or IR device to
the FPIO2 header. This motherboard supports
standard IR transfer rates.
Note: Watch the pin position and the orientation
(4). SMB1 and SMB2 System Management Bus (SM-Bus) Connectors
These two connectors are reserved for the 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, this 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. You can
connect the devices
that utilize the
SM-Bus.
Note: Watch the pin position and the orientation
(5). RT1: System Temperature Thermistor
The RT1 is used to detect the system environment
temperature. You can see the readings in the BIOS or
the hardware monitoring software screen.