Gigabyte GA-Z77X-UD5H-WB WIFI User Manual - Page 26

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. 84 51 ATX_12V_2X4 ATX_12V_2X4: Pin No. Definition 1 GND (Only for 2x4-pin 12V) 2 GND (Only for 2x4-pin 12V) 3 GND 4 GND 5 +12V (Only for 2x4-pin 12V) 6 +12V (Only for 2x4-pin 12V) 7 +12V 8 +12V 12 24 1 13 ATX ATX: Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 Definition 3.3V 3.3V GND +5V GND +5V GND Power Good 5VSB (stand by +5V) +12V +12V (Only for 2x12-pin ATX) 3.3V (Only for 2x12-pin ATX) Pin No. 13 14 15 16 17 18 19 20 21 22 23 Definition 3.3V -12V GND PS_ON (soft On/Off) GND GND GND -5V +5V +5V +5V (Only for 2x12-pin ATX) 24 GND (Only for 2x12-pin ATX) Hardware Installation - 26 -