AMD GA-M55S-S3 - Manual (Page 20)

GA-M55S-S3 Motherboard - 20 -
English
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.
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.
1
PIin No. Definition
1 NC
2 GND
3 GND
4 +12V
CPU_FAN
CPU_FAN
Only for PCB REV. 1.0.
Only for PCB REV. 1.1.
1
CPU_FAN
1
SYS_FAN
1
PWR_FAN
Pin No. Definition
1 GND
2 +12V / Speed Control
3 Sense
4 Speed Control
CPU_FAN :
Pin No. Definition
1 GND
2 +12V
3 Sense
SYS_FAN / PWR_FAN :