Gigabyte MP30-AR0 Manual - Page 16

3) PMBUS (PMBus connector) 1 Pin No. Definition 1 PMBus CLK 2 PMBus DATA 3 PMBus Alert 5 4 GND 5 3.3V Sense 4/5/6/7/8) CPU0_FAN/SYS_FAN1/SYS_FAN2/SYS_FAN3/SYS_FAN4 (CPU Fan/System Fan Headers) The motherboard has one 4-pin CPU fan header, and four 4-pin 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_FAN4 CPU0_FAN SYS_FAN1 SYS_FAN2 1 CPU0_FAN SYS_FAN3 SYS_FAN4 1 SYS_FAN3 SYS_FAN1 SYS_FAN2 Pin No. 1 2 3 4 Definition GND +12V Sense Speed Control • 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. Hardware Installation - 16 -