Portfolio "Memory Expander Plus"
The picture above shows the box for the "Memory Expander Plus".
Visit the library-section to download the manuals as PDF-file!
The "Memory Expander Plus" adds another 256kbytes of RAM to the Portfolio. The memory-expansion gets its power from the Portfolio's power-source. The Portfolio's expansion-bus is passed through to maintain the possibility of connecting other devices to the main unit.
Sorry for the bad photo; a new one is coming soon!