I had bought a USB 2.0 hard drive enclosure. I have a laptop and a desktop. I purchased a additional internal hard drive and thought this would be the quickest way to copy data. The enclosure has usb 2.0 output. After fitting all well, when I started data backup I receive a error that the drive is not accessible -- parameter incorrect. It stopped. I have to re-plug the drive to access it again. I am bit irritated with the same. The laptop has Vista. I am not able to figure out where the problem lies.