Biri Komori
It's a micro sd hc, stores files, and is great at it.I don't really know enough about these kinda things to go into details of how fast it is at transfering files.But it worked great for copying video files from my computer, placing the same thing into my LED tv (has a USB port) and watching the files from there. 8gb video files would play perfectly fine. Perhaps that's saying enough about it? Worth the money!