Have you lost your Jumper Pak but still want to use your Nintendo 64? The console would be nothing more than a retro-paperweight without the Jumper Pak. Retro-bit's Super Retro (tm) 64 booster pack is the perfect solution! You can now play 64-bit games on your console! Just plug it into its memory expansion port. This is required to play all games on your N64(r), even those without memory expansion. Simply insert the card and enjoy!