Narrowed down my issue with USB ports not working on Dell WD19TB - it is related to an issue with Intel USB 3.1 eXtensible Host Controller - 1.10. After researching a bit,
Intel's Latest USB 3.0 eXtensible Host Controller Driver Is Out
Download | Intel USB 3.0 Drivers for Windows 10 - Driver Easy
Intel USB 3.0 eXtensible Host Controller driver for 7720 inspiron 17r special edition - Page 4 - Dell Community
Re: Intel USB 3.0 eXtensible Host Controller will not instal... - HP Support Community - 6928063
Fix – XHCI USB host controller is not working issue in Windows 10
How To Download Intel® USB 3.0 eXtensible Host Controller Driver - YouTube