Nintendo 64 Disc Drive

Background
The Nintendo 64 Disc Drive (or the N64DD) was a short lived add-on for the Nintendo 64. It was released in 1999, and had features such as Internet access and the use of discs instead of cartridges. Unfortunately, it didn't sell too well, selling only about 15,000 copies. The Internet service it ran on, RandNet, closed down in 2001, and the rest is history.