Regular Intellivision game cartridges go into a slot of the side of the keyboard
Game cartridge plugged into the side of the Keyboard Component for Intellivision, a video game system by Mattel
inty-keyboard-cartridge-1979
Regular Intellivision game cartridges go into a slot of the side of the keyboard
Game cartridge plugged into the side of the Keyboard Component for Intellivision, a video game system by Mattel