MSI 790GX User Guide - Page 27

Fan Power Connectors: CPUFAN1, SYSFAN1~3, Chassis Intrusion Connector: JCI1

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Hardware Setup Fan Power Connectors: CPUFAN1, SYSFAN1~3 The fan power connectors support system cooling fan with +12V. W hen connecting the wire to the connectors, always note that the red wire is the positive and should be connected to the +12V; the black wire is Ground and should be connected to GND. If the mainboard has a System Hardware Monitor chipset on-board, you must use a specially designed fan with speed sensor to take advantage of the CPU fan control. GND +1 2V SE NS OR GND +12V SENSOR Control CPUFAN1 SYSFAN1/2 NC +12V GND SYSFAN3 Important 1. Please refer to the recommended CPU fans at processor's official website or consult the vendors for proper CPU cooling fan. 2. CPUFAN1 supports fan control. You can install Overclocking Center utility that will automatically control the these fan speed according to the actual CPU and system temperature. 3. Fan/heatsink with 3 or 4 pins are both available for CPUFAN1. 4. SYSFAN1/2 support fan control, too. You may select how percentage of speed for the SYSFAN1/2 in BIOS. Chassis Intrusion Connector: JCI1 This connector connects to the chassis intrusion switch cable. If the chassis is opened, the chassis intrusion mechanism will be activated. The system will record this status and show a warning message on the screen. To clear the warning, you must enter the BIOS utility and clear the record. 1 CINTRU 2 GND JCI1 2-13

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2-13
Hardware Setup
Important
1. Please refer to the recommended CPU fans at processor
’
s official website
or consult the vendors for proper CPU cooling fan.
2. CPUFAN1 supports fan control. You can install
Overclocking Center
utility that will automatically control the these fan speed according to the
actual CPU and system temperature.
3. Fan/heatsink with 3 or 4 pins are both available for CPUFAN1.
4. SYSFAN1/2 support fan control, too. You may
select how percentage of
speed for the SYSFAN1/2 in BIOS.
Fan Power Connectors: CPUFAN1, SYSFAN1~3
The fan power connectors support system cooling fan with +12V. When connecting
the wire to the connectors, always note that the red wire is the positive and should
be connected to the +12V; the black wire is Ground and should be connected to GND.
If the mainboard has a System Hardware Monitor chipset on-board, you must use a
specially designed fan with speed sensor to take advantage of the CPU fan control.
Chassis Intrusion Connector: JCI1
This connector connects to the chassis intrusion switch cable. If the chassis is
opened, the chassis intrusion mechanism will be activated. The system will record
this status and show a warning message on the screen. To clear the warning, you
must enter the BIOS utility and clear the record.
JCI1
1
CINTRU
GND
2
SYSFAN3
CPUFAN1
NC
+12V
GND
SENSOR
+12V
GND
Control
SYSFAN1/2
SENSOR
+12V
GND