A mail slot data cartridge exchange system for a data storage system may comprise a drawer mounted to the data storage system so that the drawer can be moved between a retracted position and an extended position. A cartridge magazine for holding at least one data cartridge is sized to be removably received...http://www.google.de/patents/US6643226?utm_source=gb-gplus-sharePatent US6643226 - Mail slot data cartridge exchange system for use with a data storage system
