I'm pretty aware though I still appreciate the help. Here's my Friday night:
1. Move to install the latest DisplayLink drivers from their official website, I'm told I already have the latest drivers.
2. Move to install the latest SteamVR Beta and find that it too, is updated.
3. There's an update available for my BIOS, moving from v.4024 to v.4207 on the ASUS x370 Pro Prime.
4. Test. No luck. Error 208.
5. Unplug the LinkBox, removing all cables.
6. Disable the Power Management option across all list items under USB Hub Controller in Device Manager.
6. Test. No luck. Error 208.
7. Physically move my graphics card from the PCI-E 3.0 x16 #1 slot to the #2 slot. This opens up my PCI-E 2.0 x1 #1 & #2 slots for the Wireless Adapter. Previously it was in the #3 slot. According to the IRQ assignments in my motherboard manual, this should change it from Channel D to Channel C. See attachment.
8. Test. Still no luck.
9. Check out Steam VR settings. Try the usual things like enable/disable Direct Mode. No luck. I do notice that Steam VR very obviously can not see my GPU or GPU driver, much less the headset. Try to remember if this is new or not?
And before anyone asks, this is the second GPU I've tried with Wireless (1070Ti to RTX 2070) and the second fresh install of Windows 10. 10. Google the internet for the 500th time looking for people suffering from a similar fate, find mostly my own posts. Give up. Decide to go back to playing Neverwinter Nights. See everybody in two more weeks. Another note: Steam VR can see every other part of the Vive unit, besides the actual display, over wireless, and the display itself works over wired.