Gigabyte GA-946GZ-DS3 User Manual page 20

3/4/5) CPU_FAN / SYS_FAN / PWR_FAN (Cooler Fan Power Connector)
The cooler fan power connector supplies a +12V power voltage via a 3-pin/4-pin (only for
CPU_FAN) power connector and possesses a foolproof connection design.
Most coolers are designed with color-coded power connector wires. A red power connector
wire indicates a positive connection and requires a +12V power voltage. The black connector
wire is the ground wire (GND).
Remember to connect the CPU/system fan cable to the CPU_FAN/SYS_FAN connector to prevent
CPU damage or system hanging caused by overheating.
6) NB_FAN (Chip Fan Connector)
If you installed wrong direction, the chip fan will not work. Sometimes will damage the chip fan.
(Usually black cable is GND)
GA-946GZ-DS3 (rev. 2.0) Motherboard
CPU_FAN:
1 Pin No.
1
CPU_FAN
2
3
1
4
SYS_FAN/PWR_FAN:
SYS_FAN
Pin No.
1
2
1
3
PWR_FAN
Pin No.
1
1
2
3
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Definition
GND
+12V/Speed Control
Sense
Speed Control
Definition
GND
+12V
Sense
Definition
GND
+12V
NC