What cable connects MacBook to projector?

Step 1: determine what you need In many cases, you need a cable converter to connect a projector to your Apple MacBook. This is because you connect most projectors via an HDMI or VGA connector. Newer Apple MacBook models (2015 or later) only have Thunderbolt 3 (USB-C) ports. So check which connectors you have.

How do I get sound from computer to projector?

Make the Connection:Connect the HDMI cable to the computer and projector. If the projector has a DVI/HDMI port do not use it. Turn on the projector and select the HDMI port you are using. Turn on the computer. Optional. Go to Start>Control Panel>Sound>Playback tab.