Hi All,   Sorry for the delay in concluding this issue. I can confirm that post purchase of passive adaptors this issue was resolved.  I've been using passive adaptors for months now without this issue. Thanks for all your inputs. Regards, Barry
I have a configuration of Dell Precision 5760 - Docking Station WD19TB - 2 External displays as mentioned in the subject line. I bought the WD19TB with the idea that it gives me the greatest expandability for my Thunderbolt 4 Laptop. This docking station has 1 HDMI and 2 Display port connectors. The way I tend to use my system is to have a closed laptop with two eternal 27' displays connected to the docking station via the DP connections. I don't actually have DP monitors 'yet' (a future upgrade) but I have bought a couple of high quality DP to HDMI converter cables (which claim a capability of 4k @ 60hz each) to use on my existing monitors. These are connected to the DPs and the 'current' monitors are connected via HDMI. I also have the laptop setup such that when I switch on the power at the mains socket the whole system boots up (a change to the bios). I am having issues with this setup however. Initially when I connected these monitors this system worked perfectly and when I booted up I had a extended display system. Recently however 'for some reason' (maybe as a result of updates) in recent weeks one of the two displays often does not show (sometimes both). I have to resort to messing about with cables and/or the display settings to get the original arrangement back. This situation seems to be getting worse to the point where I cannot get this external two display extended layout to work at all. Can any one advise if there is any docking station control software or give any advise on how to resolve this issue? Thanks in advance. Barry
Dell Precision 5760 - Docking Station WD19TB - 2 External displays