This TV uses the HDMI 1.3a specification which limits the number of assignable logical HDMI addresses to three; hence you will only see three devices in the Device List which can be found under the TV menu here:
[Setup] > [Installation] > [Preferences] > [EasyLink] > [Device List]
Note: Master EasyLink has to be turned “On” in order to see the device list.
Adding a 4th device may cause other devices to lose their Device IDs, however each device will maintain full functionality.
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