512 MB XBOX 360 memory unit.   Enhances the gaming experience. Allows you to save your in-game achievements and unique gamer profiles. Portable and lightweight. Enables quick and easy access to previously established benchmarks, putting you in control of your games and your lifestyle. You can save your games, your Xbox Live profile, and more with Xbox 360 memory units. Required in absence of a hard drive to play on Xbox LIVE and to save game progress. Requires no setup. Just plug it in, and you can save your favorite games You can easily upgrade to more storage space with 512MB XBOX memory unit.