A WD 500 GB My Book drive purchased in 2011 died. After some troubleshooting, found the 12V DC power brick malfunctioned. Multimeter measured 12.2V, but drive would not spin up. The drive was a 3.5 inch, SATA model. I found a Seagate External enclosure with the SATA-USB2 bridge board in my parts box along with a 12V DC power brick. Moved the drive over and everything now works. Files on the hard drive were intact!