In my task I'm utilizing a CM2009 IC between genuine VGA controller and VGA output connector. It's mentioned from the datasheet for this IC that I can use EMI filters on HSYNC, VSYNC and DDC channels ideal soon after IC and ahead of VGA connector. Though there isn't any specs https://jaidenslctj.activosblog.com/30464596/the-definitive-guide-to-electromagnetic-compatibility