Below you can see the official Sega Saturn floppy disc drive.  The idea behind the drive was to use it as a replacement for memory cards as well as saving data from the net in conjunction with the Saturn's Internet browser software.  As it turned out, only a hand full of games support direct saving and reading to the FDD including Panzer Dragoon Azel / Saga and Dezaemon 2.  Of course you can back up any save data from you're Saturn's memory to the FDD for safe keeping.

The hardware comes complete with driver CDROM software for use in the Saturn, power supply unit and instructions.  Unfortunately I'm missing all of those.  Oh well.