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Convert 2 x HDMI inputs to 2 x HDMI outputs via ethernet cat5/6

I am trying to store several PC towers in a server cabinet and connect each tower to 2 x monitors via a HDMI to Ethernet converter. I have seen the products capable of running HDMI through one ethernet line but is there a product capable of running 2 or more separate HDMI inputs to 2 or more separate HDMI outputs?
The only item I have managed to find is a HDMI splitters which will show the one HDMI input, the HDMI output would then be the same on each screen. I have 4 towers to connect to 2 screens each so I would need 8 individual converter all power by 5v power supplies.IS there a better solution?