Alice Averlong🏳️‍⚧️ on Nostr: It does support Memory Stick so you can have up to 128mb of flash storage, but ...

It does support Memory Stick so you can have up to 128mb of flash storage, but instead of including a memory stick slot like some later Mavicas, they instead added support for the FlashPath flash-to-floppy adapters, so you have to put your memory stick inside one of these adapters (which take batteries!)

This is Sony branded, but it's based on the same technology as the other FlashPath products, Sony just licensed it.