The printed circuit board on the VIM16 is divided into two areas labelled A and B. The area labelled A connects to one set of Vantage4-PRO cards and the area labelled B connects to a second set of Vantage4-PRO cards. The maximum number of Vantage4-PRO cards in any system is 16, therefore, the total number of cards for both sets (A and B) cannot exceed 16.

The VIM16 is capable of providing 16 analog video inputs to each set of Vantage4-PRO cards it is connected to. Each video overlay window can select any one of 16 possible video inputs.

The following illustration shows how the VIM16 is connected to four Vantage4-PRO cards: (Model shown VIM16-4)