MSI K7D MASTER User Guide - Page 39

Fan Power Connectors: CPUFAN1/CPUFAN2/PSFAN1, SYSFAN/NBFAN1

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Page 39 highlights

Chapter 2 Fan Power Connectors: CPUFAN1/CPUFAN2/PSFAN1/ SYSFAN/NBFAN1 The CPUFAN1 & 2 (processor fans), PSFAN1 (power supply fan), SYSFAN (system fan), and NBFAN1 (NorthBridge fan) support system cooling fan with +12V. It supports two/three-pin head connector. When connecting the wire to the connectors, always take 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 +12V SENSOR CPUFAN2 SENSOR +12V GND PSFAN1 GND +12V SENSOR CPUFAN1 +12V GND NBFAN1 GND +12V SENSOR SYSFAN Note: 1. Always consult the vendor for proper CPU cooling fan. 2. CPU Fan supports the fan control. You can install the PC Alert utility that will automatically control the CPU Fan speed according to the actual CPU temeperature. 2-22

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Chapter 2
Fan Power Connectors: CPUFAN1/CPUFAN2/PSFAN1/
SYSFAN/NBFAN1
The CPUFAN1 & 2 (processor fans), PSFAN1 (power supply fan),
SYSFAN (system fan), and NBFAN1 (NorthBridge fan) support system cooling
fan with +12V. It supports two/three-pin head connector. When connecting
the wire to the connectors, always take 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.
Note:
1. Always consult the vendor for proper CPU cooling fan.
2. CPU Fan supports the fan control. You can install the PC Alert
utility that will automatically control the CPU Fan speed according
to the actual CPU temeperature.
NBFAN1
GND
+12V
SENSOR
+12V
GND
SYSFAN
SENSOR
+12V
GND
CPUFAN1
SENSOR
+12V
GND
CPUFAN2
SENSOR
+12V
GND
PSFAN1