This is one real case study shared by one Dolphin user in Spain. When the user received this case, it is one WD USB3.0 MY BOOK hard drive. When connecting this portable drive to pc, the PC has no response at all.
The user removed the external USB3.0 enclosure and inside is one WD 3.5″ SATA hard drive-WD20EARX-32PASB0 and found also the USB interface was damaged. Read more