Sorry, I`ll be more specific.
It`s wireless technology not bluetooth, one has a button the other dose not have it. The keyboard is Logitech, the mouse is Canyon, bought in different years.
Thanks for the Google link, I already did my Google research and found that someone did it but didn`t say how, I know how to change manually the frequency by pressing the button, but that`s not what I want to do. I want to hack in the dongle/mouse/keyboard software that gives them the specific frequency and manually change them cause they don`t use the same code since they are made by different manufacturers.
And I want to know what to use to find their wireless frequency since is not normally picked up by a wireless card.