Gigabyte GA-Z97-HD3 User Manual - Page 13

1/2) ATX_12V_2X4/ATX (2x4 12V Power Connector and 2x12 Main Power Connector) With the use of the power connector, the power supply can supply enough stable power to all the components on the motherboard. Before connecting the power connector, first make sure the power supply is turned off and all devices are properly installed. The power connector possesses a foolproof design. Connect the power supply cable to the power connector in the correct orientation. The 12V power connector mainly supplies power to the CPU. If the 12V power connector is not connected, the computer will not start. To meet expansion requirements, it is recommended that a power supply that can withstand high power consumption be used (500W or greater). If a power supply is used that does not provide the required power, the result can lead to an unstable or unbootable system. ATX_12V_2X4: 5 8 1 4 ATX_12V_2X4 Pin No. 1 2 3 4 Definition Pin No. GND (Only for 2x4-pin ATX) 5 GND (Only for 2x4-pin ATX) 6 GND 7 GND 8 Definition +12V (Only for 2x4-pin ATX) +12V (Only for 2x4-pin ATX) +12V +12V 12 24 1 13 ATX ATX: Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 Definition Pin No. 3.3V 13 3.3V 14 GND 15 +5V 16 GND 17 +5V 18 GND 19 Power Good 20 5VSB (stand by +5V) 21 +12V 22 +12V (Only for 2x12-pin 23 ATX) 3.3V (Only for 2x12-pin 24 ATX) Definition 3.3V -12V GND PS_ON (soft On/Off) GND GND GND -5V +5V +5V +5V (Only for 2x12-pin ATX) GND (Only for 2x12-pin ATX) 3/4) CPU_FAN/SYS_FAN1/SYS_FAN2/SYS_FAN3 (Fan Headers) The motherboard has a 4-pin CPU fan header (CPU_FAN), twp 4-pin (SYS_FAN1, SYS_FAN2) and a 3-pin (SYS_FAN3) 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 speed control function requires the use of a fan with fan speed control design. For optimum heat dissipation, it is recommended that a system fan be installed inside the chassis. 1 CPU_FAN 1 1 SYS_FAN1/2 SYS_FAN3 CPU_FAN: Pin No. Definition 1 GND 2 +12V 3 Sense 4 Speed Control SYS_FAN1/2: Pin No. Definition 1 GND 2 +12V / Speed Control 3 Sense 4 VCC SYS_FAN3: Pin No. Definition 1 GND 2 +12V 3 N/A •• 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. - 13 -