Review on Selector Switcher Bi Directional Keyboard Computers by Keith Maynard

The one I received was defective. The USB switch doesn't switch between sources, or at least doesn't switch to source 2. When the button is pressed or pressed, the "1" indicator stays lit and the "2" indicator never lights. However, it turns off source 1 when the button is pressed (top position), so you might think it's trying to switch to source 2.