How to Use Bluetooth to Connect an LCD Projector. Using a video cable to connect your computer to the projector often leaves the cable exposed for everyone to see. In addition, it limits the ...

Connect the 3.5 mm plug on the audio cable to your computer's Line Out or Headphone jack, and insert the other end into your projector's Audio input.

The Apple USB-C VGA Multiport Adapter lets you mirror your Mac display to a VGA-enabled projector, TV or display in up to 1080p HD. Thankfully there are cheaper third-party USB-C to VGA adapters.