Bought to replace my old matrix Connect Research who lacked EDID Manager. This matrix is what is asked, switche 4 input sources on 2 displays independently. I needed to force the EDID video for stability when starting the exchange protocol between HDMI sources and my readers ... I have not yet used the 16 available configurations, including 4K EDIDs not yet having diffuser of this resolution. The exchanges with the seller are pretty fast and satisfactory answers provided.