I have not tried updating the docking station drivers as I'm locked-out of making such administrator updates on my work machine. Plug-in 3.5mm audio at the dock or select a different audio set via the machine settings. Also note that, the dock takes over audio too. I've been using this DisplayLink docking unit since Jan2018 - absolutely no device issues. And it looks great! However using the UltraWide display with the dock only get me a 'stretched' 1920x1080 resolution which is so-so but it works. If I connect a separate UltraWide display directly to the HDMI port, I am allowed to use the 2560x1080 wide resolution - only for the connected display. The laptop connects using either the USB-C or USB 3.0 p. I use my work laptop - Dell Latitude 7480 - running a 1920x1080 resolution.

CAUTION on using UltraWide displays as the docking station connection does not recognize their expanded resolutions & so only uses the source PC or laptop resolution settings to extend to the connected displays. This line of docking stations only intended to extend or expand display options. Dock connection DOES NOT charge a connected laptop.

Dell docking station d3100 drivers