This is going to be a relatively specific question. I bought the BE550/BE9300 in Japan, which apparently doesn't cover as much of the 6ghz spectrum as the US does, and it shows in settings only showing PSC channels up to 85, where as the US has that plus 101, 117, 133, 149, 165, 181, 197, 213, 229.

My question would be, when I take this router back to the states, would I be able to utilize the additional bands? Or is the product specific to the region that it was bought and I'm SOL on my purchase?

The same question applies to the RE815XE as well, because I also bought one of those. Thank you in advance.