Advantech AIMB-781 - Line Out, MIC in Connector (AUDIO1); Pin Alarm Board Connector (VOLT1)

23 AIMB-781 User Manual
Chapter 2 Connecting Peripherals
2.12 Line Out, Mic In Connector (AUDIO1)
Line Out can be connected to external audio devices like speakers or headphones.
Mic In can be connected to a microphone.
2.13 8-pin Alarm Board Connector (VOLT1)
VOLT1 connects to the alarm board of Advantech chassis. These alarm boards give
warnings if a power supply or fan fails, if the chassis overheats, or if the backplane
malfunctions.
AUDIO1
Line Out
MIC In
VOLT1