Hi
i want to buy  the slg3000 

Anyway I did not find enough information on this device.
 I want to connect it to my video card
 What is the connection? Does it have to be combined if another device?
Their website does not have enough explanations 
 http://arcadeforge.net/SLG3000:::3.html
   http://arcadeforge.net/SLG3000:::3.html