Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Useful once you know how it works

Kudos to the other reviewer who pointed out the difference between Western Digital Drives and others. The instructions make NO mention of this at all.Here is the step by step procedure that I followed and it worked perfectly on a Win XP machine:1. Attach the power supply to an outlet and plug into the hard drive's 4-pin power receptacle.2. Attach the IDE adapter to the hard drive.3. Plug the USB into the computer.If you plug the USB in first, then the IDE to the drive, you have to take the USB out and plug it back in for it to recognize the drive.Drive select should be Master for drives other than Western Digital.No jumper at all for Western Digital devices.4 stars for the stupid instructions and complete lack of website mention of this as well. Other than that it works fine.