This is Apple I. The first Apple computer. Steve Jobs and Steve Wozniak, the most famous members of the Homebrew Computer Club, designed it over 30 years ago, in 1976. It was mostly a kit computer. Users bought the workings and built their own case.
Many leaders in mainline computer companies like IBM and Digitial did not believe at that time that personal computers were powerful enough to have a market. Sales of the Apple I and other PC’s that followed it, proved them wrong.