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Not Dead Yet: WD Releases New 6TB 2.5-Inch External Hard Drives - First Upgrade in Seven Years
(www.anandtech.com)
This is a most excellent place for technology news and articles.
These things (and Seagate's) have the usb interface soldered on, so if the drivd dies, forget about the data, no way to connect to another usb adapter to try to recover. Granted, it's usually the drive that dies, but in these cases, you have a 100% rate of non recovery . Any other brand's are standard drives. My favorite are toshiba.
Why would the USB electronics be particularly likely to fail relative to other electronics on the drive?
Not particularly, but it happens.