[lionking]

Thanks for your answer.
So, you think as long as the device sends page up/down, it can be used?
I think, every simple presenter for Powerpoint should support that.

I never used a pedal, so can you please explaine, what you mean with scroll back?
Isn´t that simple a page up?

I have also read, that maybe 4-pedal devices can be supported. Wich functions can be used with the additional pedals?

Sorry, im a total beginner in using this technology.