Still, it sounds very similar to e.g. 10III crashes with beep when plugged into docking station
Maybe there’s some Thunderbolt magic happening on the laptop, similar to what an USB3 docking station would do?
Also, 10III crashes with beep when plugged into docking station - #10 by Cmdr_Zod seems to indicate it’s related to power delivery rather than any functional features of USB3.