I bought this product because I needed to install a specialized research program - made for Windows - on my MAC. The Cross Over Box listed on the box as "compatible" the particular research software - so it seemed like a secure deal. However, it turned out that Code Weavers did not allow this software to work on my computer. The website then explained that there's a distinction between "supported" programs and "compatible." The "compatible" ones listed on the box don't always work.The product offers lots of online support but it's not so easy to find what you need. Overall, it was not a good experience for me.