In this case, the cable used with the monitor needs to be a Thunderbolt 3 cable, not just a USB-C cable. I haven't seen a teardown of the new ones, but at least

In this case, the cable used with the monitor needs to be a Thunderbolt 3 cable, not just a USB-C cable. I haven't seen a teardown of the new ones, but at least for the previous generation there's a bit more to it than your average cable. https://www.wired.com/2011/06/thunderbolt-cable-teardown-reveals-enough-chips-to-make-a-computer/ https://www.wired.com/2011/06/thunderbolt-cable-teardown-rev... Thunderbolt 2 had the same compatibility issue in that it was the same connector as Mini DisplayPort but couldn't run over a standard DP cable. That was pretty minor since it's not like everyone has a pile of loose DP cables sitting around. On the other hand, your average consumer never uses a Thunderbolt device to begin with on account of them being significantly more expensive than other accessories. They'll likely never run into this even with it using a USB-like cable, and the people who do need TB will figure it out.