Hello every! I have been searching and reading this forum for help for quite some years and now I decided to join up because I have a problem that I cannot find a solution here. I bought a Fujitsu Dynadisq III 2 1/2"320gb external harddisk. It has a usb power cord and a usb data cord. When I plug in the usb power cord only, it makes a sound that sounds like head crash. But it goes away after I plug in the usb data cord. Is this normal? Also, when I safe remove the harddisk, and remove the usb data cord, it sometimes spin down and makes that noise, but sometimes it just keep spinning. Does anyone have any idea on what is happening?