1), A user connects a monitor ,keyboard, and mouse to the KVM device,then uses special cables(generally usb & vga) to connect the KVM device to the computer.

2),Control is switched from one computer to another by using  a switch or buttons on the KVM device,with the KVM passing the signals between the computers and the keyboard ,mouse and monitor depending on which computer is currently selected.

3),Most electronic devices also allow control to be switched through keyboard commands.

4),Designed to deliver excellent video performance at high resolutions

5)OEM/ODM service is allright.