I bought this 4GB stick to put my cd's on to leave attached to the car radio, the connector is hidden. I was able put about 25 cd's on it, the radio will only take 512 files, and I leave it attached so I have access to a good selection of music when I am driving. It is really small, which is what I wanted, and the fact that the cover rotates means that the top won't get lost.
It is formated as FAT32 which my radio will access. It does have some software on it when shipped but I deleted it as I did not require it. Works file as a blank drive, no drivers to load or download.
Good quality cheap drive. I would consider using a larger version of this make. Note that I already have various other makes up to 32GB and this one is comparable in quality.