About projection computers and curtains.

There is usually a patch cord when projecting from the mobile phone to the curtain, and the general projector has an excuse of VGA.

This cable connects the projectors to your computer one by one. If your computer is a notebook computer, it may not have a VGA interface, so you need to switch the interface, usually TypeC or HDMI to VGA interface.

You can play ppt if the connection is smooth. I hope I can help you.