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>Much of USB-C’s awesome capability comes from Thunderbolt and other Alternate Modes. But due to their potential bandwidth demands, computers can’t have very many USB-C ports.

Why is this the case?

I read that thunderbolt v3 can handle upwards of 40Gbit/s.

Ok... but what is limiting the number of USB-C Thunderbolt-enabled ports that a given computer can have?

Surely each of those ports are not being maxed out to 100% of their bandwidth 24/7?

Why can't the bandwidth just be limited as needed like in a cheap router for example?

(I know nothing about hardware, FYI)



PCIe lanes usually. CPUs only give you so many.




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