Wanted to use the distribution to occasionally operate in parallel a beamer. So far I had always only activate the second port on the graphics card, which I found awkward. In any case, after connecting the monitor to an output of the distributor changed for the time being nothing until after the second terminal has been occupied by a 5-m-VGA cable to the projector, were seen Schatterdarstellungen and doubled up on the screen. After connecting the projector, the one does not need to turn, a normals monitor image was again seen, but darker than originally, here had to be readjusted. Thus, this means that both terminals of the adapter cable must be constantly occupied, so you can work properly. But since I wegräume the projector after use, the adapter cable therefore does not fulfill its function so be 100%, because the monitor image deteriorates immediately. Maybe 5 meters are also too long, and the whole thing runs perfectly with two monitors and shorter leads, unfortunately, there are no technical descriptions for this product.