USB on a Projector Optoma EP719 why is it there?

Question

What function does the USB port do on the projector? I found a USB cable for it and hooked it up to the projector and my computer. My computer isn't recognizing anything and I'm curious what the USB port is used for?

Answer 1

Are you sure that model number is right? I don't see a USB connection on the EP719, the EP721 has one though. In any case, the USB would not be used for RS-232 control. On the Optomas the USB port is for connecting to your PC so you can control the mouse from the projector remote. RS-232 control is via the 8-pin mini-din connector, or via a db9 connector on some gear.

Answer 2

It's for RS232 control.

Some home entertainment and professional equipment can be controlled through an automation system instead of the IR remote control. They use RS232 as a communication protocol. In this case, the data is sent via the USB port. It has no other function on your projector except maybe as a diagnostics port.

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