A 64kB RAM solderless expansion for Commodore 16/116 created and built by Mirco Gaggiottini aka Retrofixer.
Just insert the Expansion under the TED chip, no soldering required, and that's done. A jumper allows to switch the memory expansion on/off when needed.
All the information about any technical data can be found at his GitHub page. More schematics and other data on his own personal homepage (Italian language). The finished hardware can be purchased at PCBWay.
Author's Video About Internal Expansions' Comparation (Italian)
