If you bought a flash memory item from eBay seller arnejorg, you are advised to test item(s) immediately for advertised capacity. Read: H2testw 1.4 – Gold Standard In Detecting USB Counterfeit Drives
If your memory item fails testing report immediately to SOSFakeFlash.
Never use any flash memory item without testing for capacity. If you purchased a fake you could lose your files and data. Read: Why Is Fake Flash Memory So Dangerous?
Please see Validation Memory links for brand names and flash nand memory chip decoding. Reminder, Gb is Gigabits, not Gigabytes. 8 bits is 1 byte. You must divide by 8, if manufacturer lists size as Gb. Exercise care in disassembly of your item to decode.
Kingston read:
Crises on Ebay For Fake Flash Memory Products Sold In 32GB 64GB 128GB 256GB – SOSFakeFlash Reports