Summary: I am a ham radio operator and have many computers running 24/7 that are available to other radio operators on and off line. 4 computers means 4 monitors, mice and keyboards. That is a lot of gear on the desk top. I found this switch some time ago and eliminated a keyboard, monitor and mouse. Worked better than I had expected. Lately one of the other monitors quit working. $90.00 to replace it or $20.00 for the switch. No brainer.