User Guide

2-6 Chapter2
SE6
utility or other similar utilities.
Note: Watch the pin position and the orientation
(5) CNR Slot: Communication Network Riser
Slot
This slot is used for an optional CNR with the
main objective of reducing the baseline
implementation cost of features that are widely
used in the “Connected PC”, while also
addressing specific functional limitations of
today’s audio, modem, and LAN subsystems.
(6) SMB1 & SMB2 Header: System
Management Bus Connector
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.
Note: Watch the pin position and the
orientation.
(7) JP3 Header (RT2 Thermistor):
This header is a thermistor connector used for
detecting the system environmental temperature.
It may also be called a system temperature
detector. You can attach one end of the two-
threaded thermal cable (optional) to the JP3
header, then tape the other end of the thermal
cable onto the CPU’s heat sink. Generally
speaking, the location you tape the thermistor
should be as near the CPU chipset as possible
and avoid having it near the CPU fan.
(8) USB2/3 Headers: Additional USB Plugs:
These headers are used for connecting the
additional USB ports plug. You can have two
additional USB plugs affixed to the back panel