looks like a US plug tucked away there at the side...why do we need an extra usa adapter for $1 usd then?
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its a good question. I actually beleive that you do not need the adapter. look at it:
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It looks like it adds a grounding pin, but otherwise serves no purpose (that grounding effect wont transfer to the R1 AFAIK)
Is it just me?
That plug does not look like it fits that adaptor.
It looks like the 2 pins on the R1 flip out (like a lot of wall-wart devices do) and completely compatible with the typical 2-pronged (L,N) 110-120V sockets in North America.
The adapter looks to simply convert that to include a grounding pin as per 3-pin (L,N,G) outlets. Only reason you would otherwise use it is if it features a 115->230V converter (which i doubt)
I was a little surprised to see the plugs that look like standard US plugs on router. I'm suprised they did not show back before now.
I don't know I cant figure out why they would sell an adapter if you don't need it. I can't imagine them selling a us to us adapter. But they may have surprised me and have it going from us 2 prong to us 2 prong with ground going nowhere.