They’re the same port. TB4 is TB3 + USB4 + two display support (and maybe some o... | Hacker News

Hacker Newsnew | past | comments | ask | show | jobs | submit

		astrange on Jan 7, 2021 \| parent \| context \| favorite \| on: M1 Macs cannot support dual Extended displays thro... They’re the same port. TB4 is TB3 + USB4 + two display support (and maybe some other things?). The M1 isn’t compliant because of the display limit, but it does have USB4.

qwerty456127 on Jan 7, 2021 [–]

I see. Thank you. I thought Thunderbolt 3 is MiniDisplayPort.

By the way, can I convert the MiniDisplayPort Thunderbolt port on an old MacBook Air into a USB 3.2 gen 2 host port to connect an M.2 NVMe enclosre?

Consider applying for YC's Winter 2026 batch! Applications are open till Nov 10
Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact