The ADS-12-I is an all-new advanced AV switch which supports 1920 x 1200 high resolution DVI and an analog stereo audio connection for speakers/microphone up to two systems. The built-in "Full Time DDC" makes for no more signal delay when the user is switching channels, specifically for the ultimate stability and Windows 7/Windows 8 compatibility. Patented "Audio Switching and Procession Technology" ensures the users to enjoy high quality audio output. The 2-in, 1-out design of the ADS-12-I makes it convenient for the user to connect PCs, notebooks, DVD players, etc. It's a professional video/audio solution to make meeting presentations much easier and efficient.The ADS-12-I also has an RS-232 connection for additional control options as well as IR remote compatibility.