The VM8804 4-Port HDMI Output Board offers an easy way to route any of audio/video sources to any of 4 displays, in combination with an ATEN Modular Matrix Switch. HDMI (3D, Deep Color); HDCP 1.4 Compatible. Built-in scaler on each output port to support the scaling function for different video resolutions. Seamless Switch™– provides continuous video streams, real-time switching and stable signal transmission. Audio-enabled.