This product is either discontinued or we cannot get that from suppliers.
Kensington 33987, Connections VGA Out, Host Interface: Mini DisplayPort 1.2, Wired, Resolution 1920 x 1080 (1080P), Mini DisplayPort 1.2 > VGA, Output 1 x VGA, Single Display – 2K (HD 1080P).
Simply use the Mini DisplayPort connection found on your laptop or tablet and plug the other end of the adapter into the video cable from the VGA port on your monitor or projector