There used to be people who would sell you memory for MacBooks or Fujistu laptops that nearly doubled the official RAM. My impression was that they didn’t support arbitrary N GB cards but they did support a subset, and these guys just found a module that they did support.
For my Fujitsu there was memory soldiered on the board so you couldn’t quite double it, but you could get around half again as much memory as the manufacturer claimed was the max.
For my Fujitsu there was memory soldiered on the board so you couldn’t quite double it, but you could get around half again as much memory as the manufacturer claimed was the max.