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GA-M55SLI-S4 Motherboard
3) PCIE_12V (Power Connector)
This power connector provides extra power to the onboard PCI Express x16 slot. When installing
two graphics cards, please connect the power cable from the power supply to this connector, or
system instability may occur.
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 fool-proof 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).
Please remember to connect the CPU/system fan cable to the CPU_FAN/SYS_FAN/PWR_FAN
connector to prevent the CPU/system/power from overheating and failure.
1
CPU_FAN
SYS_FAN / PWR_FAN
1
PIin No. Definition
1NC
2 GND
3 GND
4 +12V
1
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 :
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