The DVI splitter can allow multiple video display units connected to one DVI Source and display the same HD picture at the same time. So that you can share one signal source, greatly reduce the cost of system. 1X DVI-D input and 4 DVI-D output Support dual Link DVI-D signal transmission, resolution up to 3840X2160@30Hz Support resolution 640X480@60Hz to 3840X2160@30Hz, compatible with the HDMI 1080P standard. Support for long distance signal transmission Installs in minutes, No loss of quality. Supports wide range voltage DC input (DC5V~12V).