I purchased a 1GB flash drive from a china dealer on ebay. It looks like a Kingston 512MB Data traveler without the logo. I'm guessing its a fake. All I know is that it is a Chipsbank chip inside. The driver disc is all in chinese so I had to manually change the files and folder names to english. Out of all the programs on the disc, only one worked called UMPTool to get 500MB off of it. If I leave it in the computer it has no problems, but if I unplug it and plug it back in, Windows says it isn't formated, then only reads 8MB and unable to format. I tryed safely removing and still no luck.