Broken USB connector

My understanding is that the drive needs to be the same capacity.

See this thread:
http://forum.hddguru.com/western-digital-1tb-book-essential-t19243.html#p129912

I believe the firmware in the serial flash memory chip on the bridge board will be different between the two models.

Horrific_ending, your drive’s data are encrypted. That’s why your third party enclosure produces gibberish.