This is not entirely obvious, because a greater number of WiFi channels (13) are available in Europe than in the USA (11). See here, paragraph title "limitations"... http://en.wikipedia.org/wiki/Wi-Fi This means that if a European access point were configured to use channel 12 or 13 it would be invisible to a USA device which did not recognize channels above 11. As a practical matter I do not know if the N810 radio used on USA models works with those channels, but perhaps someone can find this information?