The Mac LC III and its 33 MHz siblings – the LC III+, LC 460, and Performa 460 – have 4 MB of RAM soldered to the motherboard and a single 72-pin SIMM socket for memory expansion.
My wife worked for a printing company, and in 1997 her boss thought that their Macintosh LC III was broken and asked me if I wanted to play with it. It turned out to be a simple repair to the video connector.
February 10, 1993 was one of the biggest days in Mac history. Apple introduced six new models at once.