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Anyone heard anything about the Wii U?  All I can find is that it'll be 802.11b/g/n Wi-Fi, plus optional Ethernet connection via USB dongle.

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I was wondering the same thing.  I find the 802.11b/g/n reference on Nintendo's tech-specs page.  They make no mention, though, about whether they've done a better job this time compared to the original wii which listed 802.11b/g wireless, but can only connect to 802.11g if it finds 802.11b first.

I was also wondering about how the wireless controllers connect back to the main unit.  I'm not finding anything on nintendo's site about that, but found that the wikipedia page about the Wii U links to a forum at .  This shows what I think is the back of the controller that shows that it uses 5150-5250Mhz.  That puts it on top of the low end of the 5Ghz channels used by WiFi.  So, I suspect, but I don't know that this will cause interference with 5Ghz 802.11N service that's running on those channels.

There's always another source of interference to make it harder to provide reliable wireless service in a college residence hall.