I've tried 3 out of 5 - takes about 20-25 minutes to copy a continuous 4GB file into them. A real USB2 drive should take much less time (no more than 15 minutes). In contrast, I copied the same file (it's an ISO for ESXi 7) to my 128GB USB 3.0 drives - the file was copied in less than 3 minutes. I've also tried copying smaller directories of files to these drives - only to get frustrated over time. This might work for college students and others who have time to wait. I return mine.
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