My experiences with the UD-ULTC4K and my new HP Spectre x360 15t (4HG39AV_1) laptop. This is a relatively new model with a six core Intel i7-8750H Coffee Lake processor.
Executive summary: looks good so far.
I wanted a three monitor solution that would work with the three monitors I have, but allow me to upgrade to additional QHD or UHD monitors in the future. I have:
HP EliteDisplay 27" E272q, 2560x1440 (QHD)
Samsung Syncmaster 24" 245bw, 1920x1200
HP LP2065 20", 1600x1200
I connected the E272q via HDMI, the other two monitors via DisplayPort-to-DVI dongles and DVI cables.
I downloaded and installed the DisplayLink drivers per the instructions that came with the UD-ULTC4K, then connected the laptop to the dock. I’ve now got all three monitors running at their native resolution, as well as the laptop internal UHD display, for a total of four displays.
It’s a little funky dragging a window back and forth from the laptop built-in UHD display to one of the other displays; since the laptop display is UHD (3840x2160), the window from the laptop initially appears huge on one of the other displays; however, Windows resizes the window to a sensible size as I continue to drag it.Same for dragging the other way; windows from the external monitors appear tiny when dragged to the laptop display, but Windows resizes it on the fly as I continue to drag it.
I’ve not yet had the laptop battery fall to a low level, but the dock has successfully charged my laptop over the USB-C host cable from 90% up to 100%. No messages about proprietary HP chargers being required or recommended; at least, not yet.
I have unplugged and re-plugged the laptop from the dock just a time or two so far, but each time, the Windows from all external monitors successfully relocate to the built-in display (on disconnect) and the external monitor layout configuration is successfully restored (on re-connect). The open windows do not relocate to the external monitors on which they previously were located, but I didn’t expect that.
I’m not really stressing the two DisplayPort connections; those monitors are relatively low resolution compared to the documented specs of those ports on this dock. I hope to upgrade at least one of those monitors in the future to at least QHD.
I haven’t finished migrating all my USB devices from my previous desktop system to the new dock, nor the wired ethernet connection, but I don’t expect any issues there.
Intended use is software development, including running one or more VMs, mostly while docked. I’m not a gamer so I can’t tell you whether this setup is good for that.