At "psrtutorial.com", you can click on "Lessons" and then click on "Smart Media Card" for info available about them.

Smart Media Cards by "TOSHIBA", "San Disk", Edge", "Delkin", "Memorex" and "Olympus" are listed in the lesson as compatible for the PSR3000.

The main thing is to be sure you purchase a Smart Media Card with the "notched corner" on the RIGHT SIDE. That means it requires "3.3 volts". Purchase the "3.3 version (3V)" and make sure that the Smart Media Card is compatible with the "SSFDC Forum" standard. The 128MB size is recommended.

For further info, go to "psrtutorial.com".

Hope this helps.