In my venture I'm using a CM2009 IC between true VGA controller and VGA output connector. It's talked about from the datasheet for this IC that I can use EMI filters on HSYNC, VSYNC and DDC channels appropriate after IC and in advance of VGA connector. However there aren't any https://beaudmub29630.uzblog.net/dc-emi-filter-fundamentals-explained-45269707