This unique mini displayporttrade to vga adapter is equipped with a built in audio port which lets you connect mini displayport equipped devices such as a microsoft surfacetrade pro 3 tablet or macbook air laptop to a vga display or projector with audio share your presentations and videos because most boardrooms are set up differently the length of cables available in each room vary not all laptops have the mini displayport mdp and audio ports positioned on the same side which can be