The problem is that both cable and adapter have plug, and to join the, it takes precisely this coupling. Works beautifully.
For large screens or projectors that feature an HDMI jack, this is usually not accessible. Instead, already plugged in a cable - with an HDMI connector. I can plug it in while my Nootebook, but to connect with the tablet cable is needed again this coupling. I have not tried yet, but since this is a potentially disruptive element - the VGA adapter - will be invisible, I'm assuming that it works.
A very useful part so, and at a mini price.