I have two computers I am trying to hook up to ONE monitor - due to space problems. I have purchased a switch, and each computer has its own wireless keyboard and mouse. But much of the time when I switch between the two computers, the keyboard will not work. Even if I change the channels on the devises the keyboard is not working correctly. Sometimes it does. I am fairly new at this and don't have an idea where to begin to fix this problem. Any help I can get is much appreciated. Thanks, Shari