cctv DVR card H.264 video codec, 4ch video, 1ch audio, 9 ADCs super high quality, H.264 optimized, TCP/UDP ... software Features :Key SpecificationCamera input: 4 channelsAudio input: 1 channel audio input through sound card with microphoneImage quality: 9-bits ADCs ... , and can also support mix inserting Ether9404 & ETHER9808, to form 12 channel monitoring.Multi screen monitoring, 1,4,9,16,25 ...