This TV RCA composite S-video converter can change the interference signals of s-video or video into non-interfering VGA signals, enabling your monitor to change to a flicker-free display. It is used to connect VCD/DVD/Webcam/Decoder etc. to a VGA screen, making your screen like a digital TV This is the VGA/4P S-video/Composite RCA to VGA Converter. With VGA/4 pin S-video/Composite RCA input and VGA output, it enables you to connect composite video, 4 pin S-video and VGA source devices (such as DVD, DVR, computer host, etc.) to a VGA display (such as LCD monitor, computer monitor). Thus, you can press the "input" button for easy switching of the input signal, rather than reconnecting the composite video, 4-pin S-video and VGA source devices again and again.