Here's a link to the tested adapters that have been found to be compatible/incompatible with the Wii:
http://www.wiili.org/index.php/Wii_ethernet_adapter
I own three of the AirLink (Model:ASOHOUSB) and they work perfectly with all of my consoles, not a single problem with any of them and the updates download alot faster. Better get to your local Fry's quick as these are sure to fly off shelves when the word gets around. I was there on Thursday and they were pretty well stocked when I came back today, they only had one that was a refurbished item. So good luck all...