The MacBook Air M4 supports two external displays now (with the lid open):
https://support.apple.com/guide/macbook-air/use-an-external-...
My SOs MacBook Air can only do one external monitor, even though it has the same specs as her work Pro.
The MacBook Pro with the non-Pro/Max chip (i.e. MacBook Pro M3) has the same limitations as the corresponding MacBook Air (i.e. MacBook Air M3).
The MacBook Air M4 supports two external displays now (with the lid open):
https://support.apple.com/guide/macbook-air/use-an-external-...
My SOs MacBook Air can only do one external monitor, even though it has the same specs as her work Pro.
The MacBook Pro with the non-Pro/Max chip (i.e. MacBook Pro M3) has the same limitations as the corresponding MacBook Air (i.e. MacBook Air M3).