The seller was quick to contact me and offered a full refund although I did not take that option. Although the USB sticks were not suitable for my needs, they worked like regular USB sticks. So I'm changing my rating from 2 to 5 stars. It is necessary to encourage sellers willing to defend their products. I listen to audio books and podcasts on the way to work. I thought it would be great, 2GB, a book on a flash drive, different colors. Simplify tracking. I have several USB sticks from different manufacturers and none of them give me problems. However, they refuse to be read by my CD player. He will try but then miss. I reformatted both FAT and FAT32, no difference. I've also tried using them for Live Linux bootable USBs (puppy linux, system restore, recovery utilities). They won't let you download. Tried various pre-boot utilities (Rufus, dd, DiskImager), none of them work. I'm only giving them 2 stars because you can format them and copy files into them, but there are too many limitations to make them work for me.
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