I have ask at US eBay twice, and answer was twice no, 230V not supported.
So maybe US and Australian (2 Gr11zzly: Adelaide, SA is Australia I guess) version are different.
I would like to hear from some (2 or 3) people the specification of US power adapter. But really somebody who has bought this router in USA.
If you want, other can also post, but write your country pls.
Thanks