If you have a PSP there is a foolproof and easy way to see if you have a fake memory card.
Simply go to any of the sections that allow you to access your memory card (Game, Music, video or Photo) Scroll down to highlight your memory stick and press the triangle button....Then scroll down to 'information' and press X There will be three lots of information in this section, 'User capacity'...'Free space'...and 'MagicGate'...If the MagicGate reads 'Unknown'..The memory card is fake...And seeing as 90% of Pro Duo memory cards on eBay are fake, it's likely you have a fake one.
