Connector - ATX Power Supply20 PIN MOLEX 39-29-9202 at the motherboard 20 PIN MOLEX 39-01-2200 at the cable | (at the cable) |  | (at the motherboard) |
Pin | Name | Color | Description |
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1 | 3.3V | Orange | +3.3 VDC | 2 | 3.3V | Orange | +3.3 VDC | 3 | COM | Black | Ground | 4 | 5V | Red | +5 VDC | 5 | COM | Black | Ground | 6 | 5V | Red | +5 VDC | 7 | COM | Black | Ground | 8 | PWR_OK | Gray | Power Ok (+5V & +3.3V is ok) | 9 | 5VSB | Purple | +5 VDC Standby Voltage (max 10mA) | 10 | 12V | Yellow | +12 VDC | 11 | 3.3V | Orange | +3.3 VDC | 12 | -12V | Blue | -12 VDC | 13 | COM | Black | Ground | 14 | /PS_ON | Green | Power Supply On (active low) | 15 | COM | Black | Ground | 16 | COM | Black | Ground | 17 | COM | Black | Ground | 18 | -5V | White | -5 VDC | 19 | 5V | Red | +5 VDC | 20 | 5V | Red | +5 VDC |
18 AWG is recommended for all wires except pin 11, which should be 22 AWG For 300W configurations 16 AWG is recommended.
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