I bought this rather expensive cable to connect my pc with my macbook. when I first tried to connect both machines I could install the software on both machines but either machine wouldn't recognize the other regardless of how I turned the cable around. When I contacted their help desk They told me that the cable is not Leopard compatible. Therefore I downgraded back to Tiger but it still doesn't work. I do not know where the error lies, but I was a bit annoyed that this wasn't clearly marked in the specifications.