Network Display Adapter, 1080p Full HD, LAN RJ45 or USB to DVI / VGA or HDMI, 10/100 Mbits, 2x USB for mouse or keyboard, CM3-NW-011 (Electronics)
Actually it concerns with these "network graphics card" to a LAN KVM switch, which allows the use of up to four PCs via USB mouse / keyboard. This audio data is transmitted, the microphone connector I have not been tested. Benefits: * Easy