14. Terminal Assignments of Plugs
a) ATX plug (for mainboard)
The color of the individual lines (e.g. PS ON and Power OK) may differ.
One connector socket is not assigned (the cable is missing). This is where the now no longer necessary
voltage "-5V" was applied with former power supply units.
A four pin part of the plug can be taken off, so that the power supply unit can also be used with
mainboards with only 20-pin ATX connection.
However, the 4-pin connection you are left with, must not be used anywhere!
GND (black)
+5V= (red)
+5V= (red)
+5V= (red)
(not assigned)
GND (black)
GND (black)
GND (black)
PS ON (green)
GND (black)
-12V= (blue)
+3.3= (orange)
b) 5.25" plug (e.g. for 3.5" hard discs, CD/DVD drives)
+5V= (red)
GND (black)
GND (black)
+12V= (yellow)
All manuals and user guides at all-guides.com
+3.3= (orange)
+12V= (yellow)
+12V= (yellow)
+5V= standby (mauve)
Power OK (gray)
GND (black)
+5V= (red)
GND (black)
+5V= (red)
GND (black)
+3.3= (orange)
+3.3= (orange)
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