Epson PowerLite 7550C - Page 103

4 • Using ELP Link III
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2. Connect the round end of the main cable to the projector’s
Mouse/Com port.
3. Connect one end of the PC serial cable to the PC SERIAL
terminal on the square end of the main cable.
Note:
You won’t be able to use the ELP Link III software if your
system has only one serial port that is being used to support a
serial mouse.