Pinouts of Connectors

ATX / BTX +12V Power Supply pinout

layout
schematic diagram

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4 pin MOLEX 39-29-9042 connector pin-out & layout
4 pin MOLEX 39-29-9042 connector  at the motherboard
Pin Name   Color Description
1 COM   Black Ground
2 COM   Black Ground
3 +12VDC   Yellow +12 VDC
4 +12VDC   Yellow +12 VDC

Recommended wiresize 20 AWG

4 pin MOLEX 39-01-2040 connector pin-outs & layouts
4 pin MOLEX 39-01-2040 connector  at the cable
Pinouts.ru > Pinouts of power supplyes >  Pinout of ATX / BTX +12V Power Supply and layout of 4 pin MOLEX 39-29-9042 connector and 4 pin MOLEX 39-01-2040 connector

Source(s): ATX Spec v2.03 at Platform Development Support
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