The DVI-D splitter cable is for splitting one DVI-D signal to two DVI-D outputs. While the outputs use two DVI-I female connectors it only carries the DVI-D signal from the source. This product will split your video signal to deliver two identical images of the same resolution. It cannot be used to span an image across two displays or to show different images on each display.
For best results it is recommended you use 5m cables or less and two identical displays.