So someone is selling a 4Gb Secure Digital SD 150X High Speed by SFiNC card because they say the voltage of 3.3 is no good to their PDA. She said she checked it on her computer to prove it 'works' but just not compatible with her PDA. So I can I know if I can use it before buying from her? I mean It's not in the manual or the Samsun website or the three review sites I visited. It will depend on the brand, some SD cards are not compatable, if he has the same 4gb card that I bought, I would stay away from it. It will be all blue, its not compatible with a lot of things. I bought one for my camera, doesnt work. So i use it for my MP3 player, and it still acts up. Stick with a well known brand.
Go to www.newegg.com and they have a great selection for decent prices. check the booklet that comes with your camera | 