The Nintendo 64DD

(ロクヨンディーディー)

Often referred to as N64DD.

The 64DD is a magnetic disk drive peripheral for the Nintendo 64 game console developed by Nintendo. It was originally announced in 1995, prior to the Nintendo 64's 1996 launch, and after numerous delays was finally released only in Japan on December 1, 1999. Only ten pieces of software were released until the unit was discontinued in February 2001. It was a commercial failure, with at least 15,000 total units sold, with the other 85,000 units scrapped.

"DD" is short for "Disk Drive", and originally "Dynamic Drive". Plugging into the extension port on the underside of the console, it allows the Nintendo 64 to use proprietary 64 MB magnetic disks for expanded and re-writable data storage, a real-time clock for persistent game world design, and a standard font and audio library for further storage efficiency. Furthermore, the 64DD's software titles and peripherals let the user create movies, characters, and animations. The system could also connect to the Internet through a now-defunct dedicated online service for e-commerce, online gaming, and media sharing.

Console wise, there are 2 sorts of consoles, the Retail version and the Starterkit version.

Source: Wiki

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