The model of LS Pro Duo that I have has a power button that sticks out of the back ever so slightly, and a recessed RESET button. The power button only appears to work when powering it on after disconnecting the power cord (why I have to do that is another story in another thread :-). The power button will not do anything when the unit is powered on - it will not turn the power off.
The RESET button does not appear to do anything either.
I can't find any docs on what these buttons actually do, if anything. Anybody know?