Had this 64GB USB for 2 days. Format this in nfsd for use with a pvr device. Worked several times. Then I recorded 10 minutes and turned off, a black screen. Then the device does not recognize USB at all. Sent back for replacement. I have a feeling that I might have the same issues with the new device. It looks like others are having the same problem. If you have something very important to back up, you might want to consider a different brand. As I see, the teacher lost a lot of important work, he just disappeared. It's terrible. Will update this review when we get a replacement.
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