I'm seeing many compatibility issues at the 4GB card size. There will be no press a button to fix this one since the FIRMWARE in the printer will have to be updated to handle the new size cards. epson.com has contacts and you also should scour the site to see if there are any updates to the printer.
Sorry to hear you tried and found it incompatible.
Bob
Just wondered if anyone else is having problem with the EPSON R300 not reading a 2Gb SD-Card using the memory slots.
Other size cards work fine. When I put the SD-Card into the printer, the green lights flashes once, and then goes off. If other size cards are put in, the light stays on and you can read the card.
Can anyone help?

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