In short, surprising for a high-end SSD mid-2014, brand new ...
Despite the SanDisk 10-year warranty, it fails at any time, as any high-tech product ...
Long live the multiple backups !!!!
Amazon thank you fast refund.
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After a very professional and productive contact with SanDisk support, a new Extreme Pro SSD was offered to me.
It works perfectly every day for a week.
I hope it will continue trouble-free as with my other 4 SanDisk SSD for several months.
5 stars and a big Bravo to SanDisk for their responsiveness and customer service.