Reverse KVM Reverse KVM with two terminal being mutually exclusive

I am looking a device that interfaces 1 computer, 2 consoles (2 keyboards, 2 mice and 2 monitors, USB connections on KB, Mouse, VGA on monitor).
Only one console can function at a time.
Any product recommendations?

 

Thank you. But our application does not have access to the unit, it is installed inside the equipment. I need switch signal can be remotely operated to select console. CS231 is whichever is in using takes over the control, that does not meet our safety requirement. Any other recommendations?

 

the unit, means the KVM. because we no access to the KVM, therefore we can switch the user via a remote sw. another words, KVM need a switch terminal so we can switch the user remotely