Hello, I just read the threads about how to recognize a fake. I recently bought a 2GB Hi speed (sony ?) on ebay (what an error it was...). Although I read all of this documentation, I'm still not sure if my new 2GB ms is genuine. Almost everything tells me that it is fake : I bought it for 1€ (approximately one buck), the transfer speed are very low (writing speed 2.7 MB/S and reading speed 8.1 MB/S). There is also a serial number at the back : L406L1L, which I am not sure it is real or not. Thanks for the answers.