What is the pinout for a standard VGA/PGA/EGA/CGA connector?
Standard 15 pin D-Sub VGA connector pinout ___________________________________________________ \ / \ 1 2 3 4 5 / \ / \ 6 7 8 9 10 / \ / \ 11 12 13 14 15 / \_____________________________________/ Pin # Description 1 Red Video 2 Green Video 3 Blue Video 4 Sense 2 (Monitor ID bit 2) 5 Self Test (TTL Ground) 6 Red Ground 7 Green Ground 8 Blue Ground 9 Key – reserved, no pin 10 Logic Ground (Sync Ground) 11 Sense 0 (Monitor ID bit 0) 12 Sense 1 (Monitor ID bit 1) 13 Horizontal Sync 14 Vertical Sync 15 Sense 3 – often not used Compaq (and perhaps some other companies) use the “Sense” lines as a way of telling what kind of monitor is connected. Newer monitors with DDC (also called Plug-n-play) use some of these pins. [From: Ashok Cates (acates@clark.net)] The ID bit pins in the 15 pin connector are shorted/left open to identify the type of monitor. I don’t think they are very important anymore, as most cards have software to set resolutions, refresh rates etc. However, I think their functions
