1. Controllers: Instead of the Famicom's hardwired controllers, the NES has two custom 7-pin ports on the front of the console to support swappable and potentially third-party controllers. The controllers bundled with the NES are identical and include the START and SELECT buttons, allowing some NES versions of games, such as The Legend of Zelda, to use the START button on the second controller to save the game at any time. The NES controllers lack the microphone, which is used on the Famicom version of Zelda to kill certain enemies, or for singing with karaoke games. Nintendo made two advanced controllers for the NES called NES Advantage and the NES Max. Both controllers have a Turbo feature, where one press of the button represents multiple automatic rapid presses. This feature allows players to shoot much faster in shooter games. The NES Advantage has two knobs that adjust the firing rate of the turbo button from quick to Turbo, as well as a "Slow" button that slows down compatible games by rapidly pausing the game. The NES Max has a non-adjustable Turbo feature and no "Slow" feature, and has a wing-like handheld shape and a sleek directional pad. Turbo functionality exists on the NES Satellite, the NES Four Score, and the U-Force.

2. Famicom Disk System: In 1986, Nintendo released the Famicom Disk System (FDS) in Japan, a type of floppy drive that uses a single-sided, proprietary 5 cm (2") disk and plugs into the cartridge port. It contains RAM for the game to load into and an extra single-cycle wave table-lookup sound chip. The disks are used both for storing the game and saving progress, with a total capacity of 128k (64k per side). The disks were originally obtained from kiosks in malls and other public places where buyers could select a game and have it written to the disk. This process cost less than cartridges and users could take the disk back to a vending booth and have it rewritten with a new game, or the high score faxed to Nintendo for national leaderboard contests.