[nickthegreek]

You should be able to use it as an external monitor by enabling Target Display Mode. https://support.apple.com/en-us/HT204592#:~:text=You%20can%2....

Edit: looks like this is no longer a thing.

[davewongillies]

From TFA

> Target display mode is a feature available with certain older Mac models.

[Arcuru]

TFA talks about how that doesn't exist anymore.

[KeplerBoy]

yeah, that hasn't been a thing for 10 years now, unfortunately.