Topic. In actuality, I already had a Khadas Tone Board arrive and turn out to be dead.
Details: It arrived opened. Which is to say the two bits of scotch tape that had originally held the box closed were already broken. Plugging the thing into my PC produced not a single blip from Windows. I tried multiple ports. I tried multiple cables. I tried both USB2 and USB3. Microsoft provides a USB analysis took with their SDK called USBView, and it allows one to see anything plugged into any port, even if it can’t be identified. It showed nothing.
I have a replacement arriving soon. I’m hoping to learn what I might try, above and beyond what I already tried above, should it turn out that the replacement is also dead. The box had no instructions, and if I’m being perfectly frank, the steps needed to achieve the intended functionality from the board (installing the correct drivers, for a start) were not made altogether easy to locate on the website. So even though there didn’t seem to be anything of the sort on the board itself, I can’t discount the possibility that I missed an “on” switch or something.