SOLVED! TB16 dock USB ports stop working if un-plug and re-plug.

I had a TB16 that would only display one monitor at a time and was told to update the firmware, which, after much struggle, was abandoned as a failure (MST hub 2 kept failing the update) and I got a replacement TB16. With this new device, both monitors work and the firmware is updated via the 1.02 tool, so all good there.

The problem is, if I unplug the thunderbolt cable and then plug it back in again, the USB ports stop working. I do not know if this issue was present with the old TB16 as I was preoccupied with the dual monitor issue. The surface cause of the problem is the ASMedia USB 3 Hub driver fails with code 38 and the only way forward is to restart my computer (power cycling the TB16 does not fix the issue, rather, it can cause the issue as well).

All the related drivers, especially and including the Thunderbolt Control Driver and ASMedia UBS Extended Host Controller are up to date from the exhaustive efforts to get the original TB16 to work and just to be sure I uninstalled everything and re-installed them. The TBT3 firmware and the TB16 firmware are, of course, the latest as well. Is there a known fix for this? I assure you, if you tell me to uninstall and reinstall a driver and/or check that the drive is current, I have done so in triplicate.

I have a Precision 3530 with Windows 10 Pro 1809, fully updated via Windows Update, and Dell Command Update doesn't find any updates either.

Drivers/FW for TB16Drivers/FW for laptop

SOLUTION:

The problem is that there are two sets of drivers installed for the device, even if you only ever see the one from Dell.

1. I rebooted my laptop with the device plugged in so the dock was connected and in working order.
2. I uninstalled the ASMedia device from Device Manager, I made sure to check the box to uninstall the drivers.
3. I ran the ASMedia driver install file from dell and selected "Uninstall" when asked. I guess step 2 isn't very thorough and there were leftover things. 
4. I unplugged from the dock and set Device Manager to Show hidden devices under the View menu
5. I uninstalled everything under the USB section that was grayed out (these are USB devices your computer has seen and installed drivers for, but that aren't currently plugged in). You may or may-not see the ASmedia device as a grayed out item and I'm not sure this step is actually needed.
6. I plugged in the dock and Windows 10 used it's own driver for the ASMedia device.
7. The Microsoft driver does not fault with code 38, no matter how many times I plug or un-plug the dock!

I suppose you could then uninstall the windows driver version and reinstall the dell driver version, but everything works with only the windows driver installed. I assume my problem was that Windows 10 had, at some point, installed its driver and the Dell driver just installed along side it. Both drivers were trying to load and it would result in code 38. Not sure if I should blame Windows or Dell for this one.