Abit NV7-133R, User Manual

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Chapter 2
NV7-133R
2-10
(3). IR1: IR Header (Infrared)
There is a specific orientation for pins 1 through 6,
attach the connector from the IR KIT or IR device to
the IR1 header. This motherboard supports standard
IR transfer rates.
Note: Watch the pin position and the orientation
(4). SMB1: System Management Bus (SM-Bus) Connectors
This connector is 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 which utilizes
the SM-Bus.
Note: Watch the pin position and the orientation