In the late 1970s and early 1980s, video game console manufacturers were trying to add peripherals to their systems such as keyboards, to capitalize on the early personal computer market. Many of the vintage game systems had expansion ports. Most of which never got used. Coleco, on the other hand, made three expansion modules; an Atari VCS adapter, a computer called ADAM, and a steering wheel for race car games. The modules would plug into the front of the ColecoVision console.
Coleco was working on several other modules including an adapter to play Intellivision games, but it was not meant to be. The company went bankrupt prematurely, but accomplished much in a short amount of time.
I present my unboxing of the 1982 ColecoVision Expansion Module 2.