No cause for concern in this, but the USB interface isn't giving all the information. I'd connect the drive with the
native interface (e.g., put it in a spare system) and run the long test. Another concern is that the drive may have
some custom firmware. See if you can download a data sheet -- drives manufactured to OEM specs for a specific application seldom have data sheets -- and check for firmware updates on the vendor's support site.
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George N. White III <aa056@chebucto.ns.ca> Head of St. Margarets Bay, Nova Scotia