this post was submitted on 02 Jun 2026
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used to be, not anymore though, thunderbolt uses the same ports as USB C and is compatible with USB C, you can think of thunderbolt as enhanced USB C
is it thunderbolt emulated through software on the USB pin stack? or is it really thunderbolt pins offering a USB connector, emulating USB protocols on the thunderbolt stack?
No. Some pins in USB can be used for non-USB protocols. If your monitor takes USB-C, likely the video signal is transmitted using DisplayPort on those pins.
Ditto thunderbolt.
i'm sorry, i don't know the details of how it's implemented exactly
Its capable of some pretty high bandwidths, there's some extra hardware required to make the ports work for thunderbolt. But I think it just runs through the normal USB-C pins.
Its more like an internal switch, rather than emulation. At least the Wikipedia page mentions different pin configurations per usage mode...
I asked a slop machine and it said that Thunderbolt is implemented in the PCIe/Displayport hardware mode of the USB. I then checked the wikipedia and it more or less aligned with that interpretation