Originally Posted by
joshwex90
This may be a stupid question, but when a router doesn't automatically convert, is it the router or the adapter? Meaning, could I buy whatever router I want and just buy a new A/C adapter that works with 220 volts?
As others have said yes, the router itself is the same whether it's purchased in the US or Europe, only the AC adapter is different to match the target market's voltage/current and plug type. That's why I recommended earlier that you go on a scavenger hunt to find an existing wall wart adapter with dual voltage input and matching output specs and exchange adapters.
For example: I have a cheapie 8-port ethernet switch which came with a 110 only, 7.5VDC adapter. I want to take this switch overseas and instead of buying a new adapter there I found that I had a wired print server which had a 110/220 7.5VDC adapter which is staying here. Just swapped the two adapters and everything is happy.