I currently have a monitor with only VGA display input connected to an old PC with only VGA display output. I need to buy a new computer that has only HDMI display output. I need to be able to switch the VGA monitor and USB ports for mouse and keyboard between the old and new computers. I've found many devices that switch between two VGA output computers, and many that switch between two HDMI output computers - but none that will switch between two of different output types. Any information about a switch that will do this, possibly with additional cables, would be very much appreciated.