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Keyboard latency

Hi,
We will be running PsychoPy on the new mac Minis (2019). Apple does not share information (at least not with us) regarding how often the keyboard status is being checked by the OS. Does anyone here know what kind of latency we are talking about for a wired, USB, mac keyboard? Some years ago, it used to be in the order of 15 ms. And we did find that wireless keyboards have a 4-15ms variable latency. But, we have not found out anything about the wired, USB keyboards.
Thank you very much for your help. It is much appreciated.
Alejandro.