If you have a 64bit application like ChessBase12 64bit or Deep Fritz 14 then you need to connect with the DGT e-Board. At this moment most of the chess applications are 32bit!! If you are not certain and have a 64bit Windows, you can install both 32bit and 64bit drivers.

 

Download Site is http://www.digitalgametechnology.com/site/index.php/dgtsupport/downloads-2