Ok I have run the usb flash stick through a few programs to see if they are really 500gb…It is still showing as 500gb…But I have also found out that they are formatted in exfat, not fat32, or ntfs….But then when I ran a test on it and it showed 500gb, it also said it was fat16. What the Hell? I am guessing the program has not heard of exfat yet. These things are driving me crazy. I have started a new test now that is especially for USB flash drives. Will get back to you about the results..By the way I tried to format the drive to ntfs but it will not. You can only format it to exfat. It does not work with anything else..