User's Guide
Page 72
... Mute button is useful, for the projector menus. See page 75. ■ Disable the projector's buttons; ■ Link 21L Select On to enable the projector to be monitored and controlled from a computer using Link 21L software and the Epson USB Communication driver. ■ Language Select a language to... use the password to prevent the projector from being turned on and prevent your custom startup screen from being changed. See the next section. ...
... Mute button is useful, for the projector menus. See page 75. ■ Disable the projector's buttons; ■ Link 21L Select On to enable the projector to be monitored and controlled from a computer using Link 21L software and the Epson USB Communication driver. ■ Language Select a language to... use the password to prevent the projector from being turned on and prevent your custom startup screen from being changed. See the next section. ...