Nearly all PC graphics cards use the same 15 pin
connector that the original IBM VGA card used.
The only thing that has changed is the monitor detection / communication.
pin IBM vga Vesa DDC1 Vesa DDC2 1 Red out * Red out * Red out * 2 Green out * Green out * Green out * 3 Blue out * Blue out * Blue out * 4 Monitor ID 2 in Monitor ID 2 in Monitor ID 2 in 5 Ground Ground Ground 6 Red return Red return Red return 7 Green return Green return Green return 8 Blue return Blue return Blue return 9 no pin optional 5V out optional 5V out 10 Sync return Sync return Sync return 11 Monitor ID 0 in Monitor ID 0 in Monitor ID 0 in 12 Monitor ID 1 in Serial data in Bidirectional I2C data (SDA) 13 Horizonal Sync out Horizonal Sync out Horizonal Sync out 14 Vertical Sync out Vertical Sync out Vertical Sync out 15 (Monitor ID 3) Monitor ID 3 in Data clock (SLC)
Signals marked with * are analogue 0.7V p-p positive signals into 75 ohm load. All other signals are TTL level signals.
4 11 12 ID2 ID0 ID1 NC NC NC no monitor NC NC GND Mono monitor which does not support 1024x768 NC GND NC Color monitor which does not support 1024x768 GND GND NC Color monitor which supports 1024x768
GND means connected to ground,
NC means that the pin should not be connected anywhere.
This monitor type detection is becoming more and more
obsolete nowadays, because more intelligence is
integrated to the monitor. New plug-and-play monitors communicate
with the computer according to VESA DDC standard.
(Pin numbers are the same for male or female) female_outside:
6
1 Red 6 Red Return 11 (ID0 GND) 1 . 11
2 Green 7 Green Return 12 Serial Data . . .
3 Blue 8 Blue Return 13 Horizontal Sync . . .
4 (ID2 GND) 9 NC (5V) 14 Vertical Sync . . .
5 Ground 10 Sync Ground 15 Data Clock . . .
5.10 .15
credits: Tomi Engdahl, http://www.hut.fi
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