Video output

I finally manage to make my laptop output the image on my TV set. In this process I become a expert in cables, jack's and wires. My laptop has a S-Video output, this is a round plug with 4 or 7 pins (a lot like the mouse or keyboard plugs). The difrence betweens 4 pins plug and 7 pins plug is that the standard S-Video has 4 pins used for intensity (Luminance),golor (Chrominance) and tow of them are ground. The 7 pin connectors has a additional ground and composite video and this kid of connectors are usually find in laptops and other spooky devices, anyway the 7 pin version is not very standard anyway so is better to consider as a plain 4 pin plug.