PC ATX Power connector:
+3.3v       1  11   +3.3v and +3.3v Sense                   
+3.3v       2  12   -12v
GND         3  13   GND
+5v         4  14   PWR_ON
GND         5  15   GND
+5v         6  16   GND
GND         7  17   GND
PW_OK       8  18   -5v
+5v standby 9  19   +5v
+12v       10  20   +5v				

PC AT power connector:
PW_OK       1
+5v         2
+12v        3
-12v        4
GND         5
GND         6

GND         1
GND         2
-5v         3
+5v         4
+5v         5
+5v         6