Initially I believe I had an issue because the power adapter is just 12V 2A and the WD webpage states I need 3Amps Power adapter. But no matter, I have the same issue using the power adapter with 3 different MBWE units, all 1TB size.
I can boot and access the GUI, but after a few seconds, the units becomes unrespnsive. Very weird. Lot of time trying restarting, with fimware upgrade, etc and the problem is not solved!!