The dock mostly functions as advertised. It takes a while to get used to the Display Port topology and scaling, even after several driver updates, the scaling is incorrect in several areas. The dock is pretty finicky, often requiring several plug-in attempts.
Every time I shut down my XPS 13 and restart the laptop, I have to either unplug the USB-C cable going to laptop from dock and plug it back in or reset the dock. I have to do this to get the signal to monitor from my HDMI port. When I tried to use the USB-C port (instead of HDMI port) on dock to connect to my monitor's USB-C port, it produced a lot of static noise in the monitor speakers. For a dock that costs as much as an entry level laptop, I expected better. Don't know if other options are worse or better than this.
These docks are not as good as the former docks Dell made. I don't understand why the connecting wires that go to computers now are so small and fragile. A number of our people have had difficulty maintaining a good connection. Likewise, now all the monitor connections are different and we simply cannot use older monitors that are still good.
The WD19s work much better than the old WD15s. The connections are better and it powers the laptops just fine. Draw back is that the dock cannot handle 2 QHD monitors - like the P2418D monitor.
I am using this docking station with a Dell Latitude 5590 laptop and two older Dell monitors connect to the docking station with two display port cables. While the instructions were minimal, everything when together easily and more importantly everything has been working perfectly for the two weeks I've owned it.