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It would be possible to move a DM-RMC-100C to the new system while keeping all the old DM-RMC-100 on the old system.? However it will not be cheap.? What you can do is buy a DM-TX-4KZ-100-C-1G for each DM-RMC-100-C you want to move.? Connect the HDMI input on the DM-TX-4KZ-100-C-1G to the HDMI output on the DM-MD-??x?? switcher instead of the DM output.? Then connect the LAN of the DM-RMC-100C to your network, The DM input of the DM-RMC-100C to the DM-output of the DM-4KZ-100-C-1G, set a reserved DHCP for the DM-RMC-100C in your router, and then add the DM-RMC-100-C to your new system as a stand alone Ethernet device. You can then drop your IR drivers on to the DM-RMC-100-C in your new program/processor. You have essential converted the DM-RMC-100-C into a balun -- and a very good one at that.? If have used the DM-RMC-100-C/DM-TX to solve HDMI balun issues in the pass where all other baluns have failed.

For the CP2, you can add a Ethernet to RS-232 adapter and connect it to a free RS232 port on the CP2.? Then X-signal any data you want to go between the systems via the comport.? I have used the Wiznet WIZ750SR-110 to add Ethernet to devices that had no Ethernet -- available from Mouser.com for about $30. Mouser part #950-WIZ750SR-110.

Not possible to use the Cresnet on the CP2 if you make it an Ethernet slave.