The Expansion Pak of Nintendo 64 Controllers
A controller pak allows players to save game progress and configuration, where is an expansion Pak is actually an expansion of it. The expansion Pak allows player to add more memory space in controller using the expansion Pak. In the Nintendo 64 controllers, a controller Pak has capacity up to 4MB; it can be expanded up to 8MB using an expansion Pak. These controllers have a slot for an expansion Pak below its removable panel. So, an expansion Pak is given to overcome the issues of limited memory in some of the games which requires higher space to store its current position, configuration, and data. So, one can enjoy any games while playing with these controllers.