Thank you for the information.
The DisplayLink chip connected to your computer at the time you took the log is a
DL3900.
That chip does not DisplayPort itself but use an external transmitter.
I was wrong on when MST was introduced, but our chip still won't send an MST as we support DisplayPort 1.1 max. I doubt the DP transmitter does MST.
"Dual Mode" in the guide should mean you can use a passive adapter to get HDMI. I think the note in the right column refers to the maximum resolution available on the dock. You can use two outputs simultaneously (DP+another), but the
maximum resolution on the DP output will drop because of the maximum pixel clock the chip can manage
DisplayLink does not design or manufacture end products, we are a semiconductor company.
I recommend you contact Humanscale for clarification on what they designed their product to do.
Kind regards,
Alban