Perhaps a little known fact, but when Apple advertised the Apple II they offered it both fully assembled and as board only, later renamed single board computer for you to attach your own keyboard, make your own power supply and case for. Supposedly the board only model was available in configurations from 4K to 48K memory.   Elsewhere it has been discussed if this ever was possible to buy or just something they advertised for the sake of it. However when browsing, I found p