The Aten VM0404 4x4 VGA & Audio Matrix switch connects any of four VGA Video + Audio inputs to any of four VGA Video + Audio outputs with long distance transmission up to 30m. It allows a user to easily switch between multiple sources and multiple displays with easy Operation via front panel pushbuttons or RS-232 serial controller and offers superior video quality – up to 1920 x 1440; VGA, SVGA, XGA, SXGA, UXGA, and WUXGA (1920 x 1200). The VM0404 supports up to 300 MHz bandwidth for high performance video, features EDID Expert that selects the optimum EDID settings for smooth power-up and highest quality display with built-in bi-directional RS-232 serial port for high-end system control and Independent switching of audio and video sources – each input can be independently connected to any or all outputs for flexibility.
Data Sheet
Manual 
The Aten VM0404 4x4 VGA & Audio Matrix switch connects any of four VGA Video + Audio inputs to any of four VGA Video + Audio outputs with long distance transmission up to 30m. It allows a user to easily switch between multiple sources and multiple displays with easy Operation via front panel pushbuttons or RS-232 serial controller and offers superior video quality – up to 1920 x 1440; VGA, SVGA, XGA, SXGA, UXGA, and WUXGA (1920 x 1200). The VM0404 supports up to 300 MHz bandwidth for high performance video, features EDID Expert that selects the optimum EDID settings for smooth power-up and highest quality display with built-in bi-directional RS-232 serial port for high-end system control and Independent switching of audio and video sources – each input can be independently connected to any or all outputs for flexibility. Data Sheet Manual