ViewSonic LS740W - RS-232 Connection

28
RS-232 Connecon
When you use a RS-232 serial port cable to connect the projector to an external
computer certain funcons can be controlled remotely by the PC, including Power
On/O, Volume adjustment, Input select, Brightness, and more.
HDMI 2 HDMI 1
RS232
USB 5V/1.5A
(SERVICE)
AUDIO OUT
DC IN