Gigabyte GA-M55S-S3 User Manual page 20

3) PCIE_12V (Power Connector)
The PCIE_12V power connector supplies extra power to the PCIE x16 slot. Connect this connector
depending on your system requirements.
4/5/6) 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/power fan cable to the CPU_FAN/SYS_FAN/PWR_FAN
connector to prevent CPU damage or system hanging caused by overheating.
CPU_FAN
CPU_FAN
GA-M55S-S3 Motherboard
1
PIin No.
CPU_FAN :
Pin No.
1
1
2
CPU_FAN
3
4
SYS_FAN / PWR_FAN :
Pin No.
1
1
SYS_FAN
2
3
1
PWR_FAN
- 20 -
Definition
1 NC
2 GND
3 GND
4 +12V
Definition
GND
+12V / Speed Control
Sense
Speed Control
Definition
GND
+12V
Sense
Only for PCB REV. 1.0.
Only for PCB REV. 1.1.