With the ViewSonic PJ-IWBADP-003 Adapter Plate, you can easily install select ViewSonic projectors on the existing mounts of Promethean (PRM-10 / PRM-20 / PRM-25 / PRM-30 / PRM-35 / PRM-45) and SMART projectors (UF55/UF55w, UF65/UF65w). This allows you to easily upgrade and replace outdated Promethean and SMART projectors and still utilize your existing interactive whiteboard.