USB 3.0 tranfer speed waving

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Ok so it a cheaper Sandisk 64gb USB 3.0 flash drive, but why does it keep doing this in my SP4?

I was only copying one 2gb file with subtitles, but it does the same thing all the time. Like it can't get enough power to it or something...

Any ideas? Or is it normal...

Thanks

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• Untitled2.jpg (100.8 KB)

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