I have a 2021 14″ MBP
The specs state:
- Native DisplayPort output over USB‑C
- VGA, HDMI, DVI, and Thunderbolt 2 output supported using adapters (sold separately)
Now, DisplayPort 1.4 supports refresh rates up to 240hz – and I am assuming my MBP is 1.4, and not 1.2 – but is that still true of usb-c to DisplayPort
Thunderbolt 2 can't go higher than 60hz, neither can HDMI – but DVI supports up to 144hz.
I am unsure what is the highest achievable refresh rate for an external display or how to achieve it with the correct adaptor.