It wasn't a "frame" really, it was just a single sheet of stamped steel in a curved shape.
The Model M wasn't nearly as impressive, or durable, as the Model F that preceded it and which was included with the IBM PC. Those keyboards had metal housings, unlike the plastic housings of the Model M.
The Model M wasn't nearly as impressive, or durable, as the Model F that preceded it and which was included with the IBM PC. Those keyboards had metal housings, unlike the plastic housings of the Model M.