ATX, WTX and other standard and proprietary power supply (PSU) cables connectors pinouts
Same as ATX except that -5VDC is removed from pin 18
Pin Name   Color Description
13.3V Orange+3.3 VDC
23.3V Orange+3.3 VDC
3COM BlackGround
45V Red+5 VDC
5COM BlackGround
65V Red+5 VDC
7COM BlackGround
8PWR_OK GrayPower Ok (+5V & +3.3V is ok)
95VSB Purple+5 VDC Standby Voltage (max 10mA)
1012V Yellow+12 VDC
113.3V Orange+3.3 VDC
12-12V Blue-12 VDC
13COM BlackGround
14/PS_ON GreenPower Supply On (active low)
15COM BlackGround
16COM BlackGround
17COM BlackGround
18res  Reserved
195V Red+5 VDC
205V Red+5 VDC
20 pin MiniFit Jr 5557-20 female (MOLEX 39-01-2200) connector layout
20 pin MiniFit Jr 5557-20 female (MOLEX 39-01-2200) connector
at the cable
According to 3 reports in our database (2 positive and 1 negative) this pinout should be correct.

Is this pinout
SFX Power Supply visual pinout:
SFX Power Supply diagram
click to enlarge
Source(s) of this and additional information: Hardware Book
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