MSI MS-6577 Getting Started page 22

Fan Power Connectors: C_FAN1/S_FAN1
The C_FAN1 (processor fan) & S_FAN1 (system fan) support system
cooling fan with +12V. It supports three-pin head connector. When connect-
ing 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.
SENSOR
+12V
GND
S_FAN1
Note: Always consult the vendor for proper CPU cooling fan.
Hardware Setup
GND
+12V
SENSOR
C_FAN1
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