After doing a clean install (not the Dell copy) of Windows Home, the 2.5gb adapter is working properly. The 5gb adapter still won't work at all. WiFi is also working properly... Something Dellish was probably interfering, not sure about the 5gb adapter but I'm good to go now. 
Dell XPS 17 9720, W11Home The machine will not connect to internet when using a Sabrent (NT-SS5G) 5gb ethernet adapter, I get the "Ethernet * doesn't have a valid ip configuration" error, this dongle uses the Aquantia drivers. A Sabrent (NTS25G) branded 2.5gb adapter, using Realtek drivers will connect, but only downloads @ 350, 1300+ is the norm on other machines, including an Inspiron 15 running W11pro.  Using wireless, the download is about the same, routinely other devices-including an Inspiron get 500/600. I've done all sorts of things, tried different drivers, from Dell, Sabrent, Aquantia, etc., and have run  ipconfig /release  ipconfig /flushdns  ipconfig /renew  netsh winsock reset. I've uninstalled Killer software, disabled Fast Startup and a few other things. I did online chat with Dell Support, the person tried to help, nothing worked. Any ideas on getting the 5gb dongle to work, and get my download speeds where they should be.?
XPS 17 Slow Internet download, USB Ethernet adapter not working