Распиновка ATX power supply connector

v 1.x with 20 pin connector was widely used at PC motherboard. Replaced by v 2.x with 24 pin connector
ATX specification includes not only Power Supply Unit, but also interface to case and motherboard. In addition to the old AT standard, ATX 2.0 has one extra voltage line available (+3.3V), a connector chain-lined to the single 20-pin and a power-on wire that allows Software to turn off the PSU.
Several units (on hand) show pin-12 as Brown (not Blue), pin-18 as Blue (not White), and pin-8 as White (not Gray).  Shorting pin 14 (/PS_ON) to GND (COM) only brings on pin-9 (stand-by). Need to signal somehow to bring the total PS on.
20 pin MOLEX 39-29-9202 разъем
на матернинской плате

20 pin MOLEX 39-01-2200 разъем
на кабеле от БП

PinName ЦветОписание13.3V Orange+3.3 VDC23.3V Orange+3.3 VDC3COM BlackGround45V Red+5 VDC5COM BlackGround65V Red+5 VDC7COM BlackGround8PWR_OK GrayPower Ok is a status signal generated by the power supply to notify the computer that the DC operating voltages are within the ranges required for proper computer operation (+5 VDC when power is Ok)95VSB Purple

+5 VDC Standby Voltage (max 10mA) 500mA or more typical

1012V Yellow+12 VDC113.3V Orange+3.3 VDC12-12V Blue-12 VDC13COM BlackGround14/PS_ON GreenPower Supply On (active low). Short this pin to GND to switch power supply ON, disconnect from GND to switch OFF.15COM BlackGround16COM BlackGround17COM BlackGround18-5V White-5 VDC (2002 v1.2 made optional, 2004 v2.01 removed from specification)195V Red+5 VDC205V Red+5 VDC

/PS_ON activated by pressing and releasing the power button while the power supply is in standby mode.
Activating /PS_ON connects the power supplyATX / BTX +12V Power Supply4 pin MOLEX 39-29-9042 разъем
на материнской плате
4 pin MOLEX 39-01-2040 разъем
на кабеле БП

PinName ЦветОписание1COM BlackGround2COM BlackGround3+12VDC Yellow+12 VDC4+12VDC Yellow+12 VDC

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