I don't have much SD cards since they're all relegated to either on the DS or digital camera but when I tried to put the digital camera one into my Wii, it gave a message saying it's not readable (it's a little known brand). Then I tried a Canon SD card which came with the camera but that also didn't work. My micro SD card along with the adapter also doesn't work and also my dad's Sandisk 1gb SD card which he uses in his camera. They're all under 2gb so I know that's not the issue but I still don't know why every card I tried failed. Is this their way of telling me to buy the "official" Wii SD cards?