Hi Eugene,
DisplayLink does not design or manufacture these. As your photos show, we're just one chip among a sea of them on the board. We wouldn't be able to know what changed between two revisions of the board and if I knew, it would not be appropriate for me to comment on their product.
Our chip is connected to the USB hub. If that hub doesn't work properly, this is normal that the outputs don't work properly.
Your best shot would be the docking station manufacturer. Only them would know what they changed, and what they tested.
Kind regards,
Alban
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