While this article focuses on the Studio Plus 700 PCI (p/n BIGBEN-51014278-1.0), because that's what this author owns, most information should also apply to the other devices in the family (Studio 500.) The difference is that the 'Board is a PCI card with breakout box while the 'Box is an external USB device, otherwise, they are identical in functionality. In addition, there is also the Studio MovieBox Plus version. This device is more commonly known as the Studio MovieBoard Plus.