The problem: One of the USB-C port of my multiport is not wokring, all others are working fine.

In detail: The multiport has two USBC sockets, SD and micro-SD card reader and 2 "normal" USB (I think version 3.0) sockets. One of the USB-C ports does not work, but all other sockets do. I need at least one USB-C for an external display and the other to charge the MacBook Air from time to time, but since I cannot use both I need to disconnect the display to charge the notebook.

What I've tried: The display and charging works fine on the one USB-C socket and also no problems if connected directly (I need the multiport also for the USB ports, that's why I still need it...) The multiport should be working fine as I tried another one (same type) because the first did not work.

Is there any updates to do or driver problems I have to solve? I am not so experienced in this kind of field.

Only the USB-C port on the far left works

  • You write "The multiport should be working fine as I tried another one (same type) because the first did not work." This is unclear: which multiport should work? Did the second multiport work correctly? Commented Feb 10, 2021 at 16:24
  • What I meant by that is, that it is unlikely that it is a problem from the mutliport, as I tried not only one (If I tried only one we could also assume that it is defect). So in fact, I don't know if it works fine, but I assume that that multiport type works normally. Commented Feb 16, 2021 at 21:26
  • This is still not clear. Do both multiports behave the same? Commented Feb 17, 2021 at 0:09
  • Sorry, maybe its my English... Yes both behave the same way. Both are new. Commented Feb 18, 2021 at 14:30
  • No worries, you're doing much better in English than I could in Portuguese. With this clearer information, I've now submitted an Answer. Commented Feb 18, 2021 at 15:47

1 Answer 1


If both multiports behave the same way — that is, show the same flaw — then it's likely the flaw is with the multiports' design or construction, or both, and not the fault of the Mac.

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