There are two styles of Unicomp keyboard available that support macOS functionality. The SpaceSaver M is the Unicomp buckling spring keyboard that has been available since 2006. In addition, we are announcing the release of the New Model M for Mac.
These two platforms differ in two ways – size and age of the injection modeling tooling. The New Model M is slightly larger in depth than the SpaceSaver M – by about ½ inch. The age of the tooling is significant. The tooling for the SpaceSaver M has been providing parts for 14 more years than tooling for the New Model M so the finish on the SpaceSaver M is not as defined as well. But many customers whose desk is already crowded prefer the SpaceSaver M. Functionally, the two keyboards are equivalent.