There are some bad sellers selling hacked memory products such as USB drive or mp3 players. How can we distinguish them?

After you have received your lovely players,
1. check the stated memory both on the device and your computer browser. If the size is less than expected, it is likely that the item has become defective during the transit or the seller has send you a wrong item by mistake. You better contact the seller for exchange.
2. if the memory size you see is just the same as the seller stated, we will then go to the verification process, the best indicator is to copy files into it to occupy all the memory. let's say 4gb. once you finished copying 4gb of files onto the player/ disk, try to access the last copied files through you computer. if you can open the files, you've got the real memory. if not, it is likely a hacked one.

Please be remind that hacked memory always trends to show you the "hacked" value. If you find the memory size is less than stated easily, it is likely that it was a honest but careless seller.