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When I log in I see that 2.4 is enabled and has a choice button at the bottom.  5.0 gHz indicates disabled, but there is no place to change to enabled or mixed.  I don't see a "tab" for wireless, just sections for 2.4 and 5.0.  Am I missing something here?  I would like to try the router with the 5.0 on for awhile and test the meter readings.