Additional technical info here:https://community.st.com/t5/stm32-mcus/faq-possible-communication-failure-between-stlink-v3-and-some/tac-p/768502

This issue also affects any product that uses the STM32F7 for USB 2.0 HS with the built-in PHY (not just STLINK probes).That means that the STM32F7's USB HS peripheral simply doesn't work with recent Apple Macs. Would love to hear if there's a workar...