Family Computer Disk System

The Family Computer Disk System, commonly shortened to the Famicom Disk System, is a peripheral for Nintendo's Family Computer (Famicom) home video game console, released in Japan on February 21, 1986 and limited release in Hong Kong in 1991. The system uses proprietary floppy disks called "Disk Cards" for more affordable data storage and adds a high-fidelity sound channel to enhance audio in compatible Disk System games.