(Subject to cheaper products with no audio cable) Today I tried the adapter with my new laptop to make presentations run over a beamer with VGA connection. It worked well at first, everything was recognized, the picture was there. But then began the image to flicker and disappeared. The same game with three different projectors (fixed). Unfortunately I do not know what it is exactly, but the fact is: unfortunately it does not work ...
Supplement: With another (transportable) Beamer everything works, but from time to time when the image flickers slightly.