I was reading this article about the next iteration to USB-C ports. It says that the new standard will double speeds from 5 Gbps to 10 Gbps.

It also says:

if you just bought a brand new computer with USB-C port, 
like, for example, the 2016 MacBook Pro that I'm using to write this 
article, you're pretty much screwed.

But according to Appleā€™s website their USB-C ports support up to 40 Gbps data transfer speeds. So this is 4 x faster than what the above article is saying about the new USB standard.

Can someone explain this to me? I am confused.


The USB-C ports on your MacBook support USB 3.1 (gen 2) AND Thunderbolt 3.

USB 3.1 gives you a transfer speed of 10 Gbit/s and Thunderbolt 3 is capable of up to 40 Gbit/s.

Note however that just because a device has an USB-C connector that doesn't imply that it supports USB 3.1 gen 2 and thus 10 Gbit/s. It can also be USB 3.1 gen 1, which is basically USB 3.0, which is 5 Gbit/s.

| improve this answer | |
  • 1
    And people thought a single connector would simplify everything. – user11633 Jul 29 '17 at 14:20
  • It is worse, a Type-C connector can be designed into devices that might support only USB 2.0 rates (HS, FS, LS), and it still will be a Type-C connector. So there are Type-C USB 2.0-only C-C cables, all within official specifications. – Ale..chenski Jul 31 '17 at 8:13

You must log in to answer this question.