BenQ IL430 Installation Handbook page 67

How to connect to external speakers?
While the display is turned off, connect external speakers to the SPEAKERS (R/L) jacks on
the display via an appropriate audio cable. And then turn on the display.
DVI-OUT
HDMI-2
VGA OUT
DVI-IN HDMI-1
VGA IN
External speakers
Troubleshooting 67