XPS 15-9570, lost ethernet connection

I normally use an ethernet connection for my 9570 via a CalDigit TS3 Plus docking station connected to the computer via a Thunderbolt 3 cable. I sometimes work outside, so I disconnect the Thunderbolt cable and used the AC adapter outside. When I reconnected the Thunderbolt cable, my ethernet connection would not re-establish. A couple of sites from a Google search recommended uninstalling the ethernet network adapter in Device Manager and then rebooting, when the computer would reactivate the network adapter. It did not. The modem is OK (tested it on a Mac Mini on my network) and the ethernet cable is OK. Dell telephone support was no help. I know I should have jotted down the name of the ethernet adapter, but I did not. It was an Intel Gigabit something or other. I cannot find the name of this thing anywhere (Dell and everyone else assumes that I should be using a wireless connection, which I am now, temporarily). If someone has a new 9570, could you please have a look in Device Manager and let me know the name of the ethernet adapter? Maybe it will help me get it recognized somehow. Even better, if someone knows how to do this, please let me know.