for Sigma EM8300 video card and may be some others
Pin Signal Description
1 Blue IN   
2 GND   
3 Green IN   
4 GND   
5 Vsync IN   
6 Hsync IN   
7 Red IN   
8 SDA  from pin12 of DB15, intended to pass the Plug&Play compatibility info of monitors if they support this feature 
9 SCL  from pin15 of DB15, intended to pass the Plug&Play compatibility info of monitors if they support this feature 
9 pin mini-DIN female proprietary of Sigma DIN VGA In connector layout
9 pin mini-DIN female proprietary connector
9 pin mini-DIN male proprietary of Sigma DIN VGA In connector layout
9 pin mini-DIN male proprietary connector
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Sigma DIN VGA In visual pinout:
Sigma DIN VGA In diagram
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