the disc drive, as when a user changes the console's orientation, the inserted disc may brush against the drive's pickup assembly and incur scratches to it. The users manual advises against changing the console's position while there is a disc in the drive. Other users report experiencing disc scratching during normal horizontal usage. Announced at CES 2006 and first publicly shown at E3 2006, an external HD DVD drive was released in North America on November 7, 2006 (for US$199.99) and in Japan on November 17, 2006 (for ¥19,800). In the UK, France and Germany, the HD DVD drive was released for €199.99/£129.99. The HD DVD drive was bundled for a limited time with an Xbox 360 Universal Media Remote, as well as an HD DVD copy of Peter Jackson's King Kong. The drive plays HD DVD movies, although all Xbox 360 games will remain on the DVD format. Microsoft had no plans to include an internal HD DVD player in future Xbox 360 designs. The drive connects to the Xbox 360 via USB and contains two integrated USB ports on the rear. Games can not be played on the HD DVD drive. Microsoft has since discontinued the HD DVD add-on since the format was officially dropped by Toshiba. List of DVD drives Hard drive storage The Xbox 360 uses standard 2.5" SATA hard disk drives (HDDs) held within custom enclosures. These units have a custom connector to facilitate connection to the Xbox 360 and the drives themselves feature custom firmware (making stand-alone drives incompatible). The drives are detachable, making it possible to move data from one console to another, and to upgrade the size of drive on a console. The hard drives themselves are manufactured by various companies, including Fujitsu, Seagate, Samsung, Hitachi and Western Digital. Certain Western Digital hard disk drives can be modified with a program called HDDHackr to be used with the Xbox 360. Approximately 7 GB are reserved for system use (4 GB of that portion are reserved for game title caching and other hard drive specific elements in games that support the hard drive, and an additional 2 GB are reserved for use by the Xbox 360 backwards-compatibility software). The original Pro configuration of the system came with a 20 GB hard drive, which was also available to purchase separately (for the Core model, and later the Arcade model, which did not include a