Gigabyte GA-965G-DS4 Manual - Page 21
/6 CPU_FAN / SYS_FAN / PWR_FAN Cooler Fan Power Connector, PCIE_12V Power Connector
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English 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. 1 PIin No. Definition 1 NC 2 GND 3 GND 4 +12V 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(CPU_FAN/ SYS_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. 1 CPU_FAN 1 SYS_FAN CPU_FAN / SYS_FAN : Pin No. Definition 1 GND 2 +12V / Speed Control 3 Sense 4 Speed Control 1 PWR_FAN PWR_FAN : Pin No. 1 2 3 Definition GND +12V Sense - 21 - Hardware Installation