3 Things to Know About the M3 MacBook Air and Dual External Displays

The M3 MacBook Air can only drive one external display (up to 6K) with the lid open. That is the native limit.

With the lid closed in clamshell mode, it can drive two displays — one up to 6K and one up to 5K. This is the only way to get two external screens without extra hardware.

To use two external displays with the lid open, you need a DisplayLink adapter. It adds latency and uses CPU, so it is fine for productivity but not for real-time tasks like video editing or gaming. If dual monitors with the laptop open is essential, get a MacBook Pro instead.