Don't want to fry my wii (original not U). But I have my wii all tied up in my basement so its a pain when I have to move it. So I went to gamestop and got a spare ac adapter 15 dollars. Neither says nintendo on them. However both are the same grey color and part number as my original ac adapter "RVL-002". But mine says 53w. The one from gamestop oddly enough says 52w. Why the difference and will I break my wii using the lower watt one?