The AC-MX-42X unit comes in DHCP by default. To find the IPv4 Address Assigned to the unit, Press and Hold OUT 2 and SCALER SET buttons for 5 seconds.
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The IPv4 Address will be presented on the OLED screen.
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From here type the IPv4 Address into your favorite browsers address bar.

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Select the Tabs Button in the top left of the screen.
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Select the I/O Config Tab

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Once in the I/O Config Tab select the desired Inputs EDID Dropdown Tab.
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Select USER1 EDID
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In the HDMI Dropdown select the Desired Output to copy from. Ensure the display is connected and that any Deep Color or Enhanced Formats have been turned on.
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Then select the Copy Button to save the EDID of the Display into the HDMI Input.
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Some Source devices may require a power cycle upon the dynamic EDID change. Some Source devices may require additional manual settings, not automatically enabled by the selection of an EDID.