To pair with yesterday’s Lisa 2, today’s #marchintosh is the Apple Cluster Controller — one of the most obscure Lisa-era accessories.
It was used to connect up to 7 Lisa or Macintosh systems (or their printers) to an IBM 3270 mainframe.
Due to Apple’s relative low market penetration with the types of corporations that would own such a mainframe, it wasn’t a compelling product and very few are out there.
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