The VS0201 2-port VGA switch with audio means that you can connect two audio/video source computers to a single monitor or projector with full audio & quickly switch between the devices for use. VS0201 built-in bi-directional RS-232 serial port for high-end system control, & advanced RS-232 control. With the ability to use high-end serial control devices via RS-232 commands allows the VS0201 to be controlled by secondary systems with advanced functions such as; port switching, auto switching, front panel pushbutton lock, & power on detection. The VS0201 is perfect for the meeting room, media centers, class rooms, or any presentation environment requiring multiple audio/video sources to be accessed on a single display.