Thanks @Adooni Is 86S also good? Why is it cheaper?you will not be able to change country code from US to NZ. Looks like wi-fi channels are similar https://en.wikipedia.org/wiki/List_of_WLAN_channels but you should avoid DFS frequency.
it is not common to have pawer adaptor build in - I had in the past D-Link DIR 868L with EU and USA option but never see it in Asus. I bought adaptor for 1USD. Most of situation input AC 100-240V (is power supply original? ) but the best way is to ask seller to confirm.
most users do not need AX86U and maybe in NZ you can find AX86S. Asus starting from AC5300 (long time ago) start to encrypt CFE (you cannot change region now) therefore the safest way is to buy product that are made for your market.
it is not easy question - I got situation in the past buying router in USA and using in EU all was working OK but one of Samsung device did not connect to it. The same router/revision but EU code no connections issue.
Anything I need to be aware of frequency wise?
Why is it cheaper?
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