Hello, this card is a SDHC card. As stated in other posts, SDHC cards ARE NOT backwards capable. You PS3 and camera can take SDHC cards, the Wii can only take SD cards. Sorry for the bad news, but on the bright side, it costs like nothing to buy a regular one!
Thanks for your input. What do you mean by 'buy a regular one'? Can I get a SDHC reader that will work with wii, or do you mean get a different card? I really like the Transcend card but it's a pain not being able to use it with the wii.