The SNES Classic Edition's controller ports are actually functional, even though the console only uses one controller at a time. You can plug in a second controller, but it won't work in-game unless the game specifically supports two players. elaborate
The Game Boy Advance's cartridge slot is backwards compatible with Game Boy and Game Boy Color cartridges. elaborate
The NES Classic Edition's power supply was notoriously short, requiring many players to find creative solutions to place it near the console. elaborate
The TurboGrafx-16's CD-ROM add-on, the TurboGrafx-CD, was the first CD-ROM based console to be released in North America. elaborate
The Nintendo Switch's Joy-Con controllers can be used as standalone controllers, even when detached from the console. elaborate
