It works O.K. when the usb cable will make contact on the disk drive connection. It is super difficult to get it to stay active. VERY UNRELIABLE disk drive connector!!! I have another almost identical drive, same make, capacity, connection that works great. The drive works as long as the connecting cable can make contact. The supplied cable worked well on other drive. Also the old cable from the other drive will not work any better on the new drive than the supplied cable. This would have been a good value to me if it worked as well as the other drive.