Editing Macintosh 512K (section)

== Memory ==

The 512 KB is soldered to the logic board. Apple offered no memory upgrade for this machine, and the RAM configuration is fixed in the logic that decodes it; period third-party boards that fitted Macintosh Plus ROMs and more memory existed, but they are logic board modifications rather than upgrades.<ref name="ah" /> The Macintosh Plus, which introduced the four 30-pin SIMM sockets used across the rest of the compact family, is documented on the [[Macintosh Plus Memory Upgrade Guide]].