In attempting to clone from one laptop HDD that has 40 GB to another that has 80 GB, I wasn't able to do so. I get this message, "USB Device Not Recognized" because it malfunctioned. I was sure the 80 GB hard drive that's getting cloned worked so I switched them and 80 GB in my laptop and it works. So I don't know why I'm receiving this message as there's nothing wrong with it and I should be able to clone it.