Gigabyte GA-6UASV3 Manual - Page 18

3/4/5/6) CPU_FAN/SYS_FAN1/SYS_FAN2/SYS_FAN3 (CPU Fan/System Fan Headers) The motherboard has a 4-pin CPU fan header (FAN1), a 4-pin (FAN4) system fan headers. Most fan headers possess a foolproof insertion design. When connecting a fan cable, be sure to connect it in the correct orientation (the black connector wire is the ground wire). The motherboard supports CPU fan speed control, which requires the use of a CPU fan with fan speed control design. For optimum heat dissipation, it is recommended that a system fan be installed inside the chassis. SYS_FAN3 CPU_FAN 1 CPU_FAN SYS_FAN2 SYS_FAN3 1 SYS_FAN1 FAN1 (CPU Fan): Pin No. Definition 1 GND 2 +12V / Speed Control 3 Sense 4 Speed Control FAN4 (System Fan): Pin No. Definition 1 GND 2 +12V / Speed Control 3 Sense 4 Reserve SYS_FAN1 SYS_FAN2 • Be sure to connect fan cables to the fan headers to prevent your CPU and system from overheating. Overheating may result in damage to the CPU or the system may hang. • These fan headers are not configuration jumper blocks. Do not place a jumper cap on the headers. 7) PWR_IPMB (Power management connector) Pin No. Definition 5 1 SMB CLK 2 SMB DATA 3 SMB Alert 4 GND 5 3.3V Sense 1 - 18 - Hardware Installation