Gigabyte MZJ19AI Manual - Page 14

2/3) CPU_FAN/SYS_FAN (CPU Fan/System Fan Header) The motherboard has one 4-pin CPU fan header, and one 4-pin system fan header. 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. CPU_FAN SYS_FAN 1 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. 4) F_USB (USB Header) The headers conform to USB 2.0 specification. Each USB header can provide two USB ports via an optional USB bracket. For purchasing the optional USB bracket, please contact the local dealer. 1 Pin No. Definition 1 GND 2 GND 3 +FUSBP2 4 -FUSBP2 5 5 VCC Hardware Installation - 14 -