a. Go to "Device Management" and choose "Operating Mode" tape, then choose the option in the dropdown list to enable broadcast function.
b. Enter to the port that connects PC and press the hotkey to call the OSD menu on the top.
c. Press the broadcast button to activate.
d. You have to press [ESC] to leave the OSD, or you couldn't type any word. You could only use the direction button to go to the next or prior port. So please make sure you press the [ESC] key on keyboard to leave the OSD.