I was given this product as a birthday gift, so it wasn't possible to return it. The product worked well on my Mac and I used in on the PC's at school. I can still retrieve my data from the drive, but the problem is, that the drive is telling me that there is no more room left for anything else. This is remarkable, since all that I stored on the drive was about several dozen word documents over the course of 30 days. Every time I try to save something more to it, it tells me that there is either no room left, or that the drive is damaged. Trust me when I say that I took very good care of this flash drive, so the fact that it could be damaged is very strange to me. Now I have to buy a new drive, and I was looking forward to using this one for many years to come. How unfortunate. If anyone has any ideas as to how I should try to fix this problem, please leave me a comment below.