

I looked into my router’s datasheet and all I can say is that it either doesn’t have it or they didn’t care to write it in (home model, nobody cares about details).
Also, the settings interface doesn’t have any reference, neither is the Transmit Power field saying “Max Transmit Power” (which would have lead me to believe that it may reduce the power in certain cases), so I am going to go with “No”, considering how old it is
So, you needed the 100%