Gigabyte GA-7PESH1 Manual - Page 21

4) PWR_DET1 (Power management connector) 1 5 Pin No. 1 2 3 4 5 Definition SMB CLK SMB DATA SMB Alert GND 3.3V Sense 5/6/7/8) CPU0_FAN/CPU1_FAN/SYS_FAN1/SYS_FAN2 (CPU Fan/System Fan Headers) The motherboard has a 4-pin CPU fan header (CPU_FAN1/2), 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. CPU1_FAN 1 CPU0_FAN 1 CPU1_FAN 1 SYS_FAN2 1 Pin No. 1 2 3 4 Definition GND +12V Sense Speed Control SYS_FAN1 SYS_FAN2 SYS_FAN1 CPU0_FAN • 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. - 21 - Hardware Installation