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SBC84831 All-In-One Capa Board User’s Manual
2.3.9
COM4 Mode Selection Jumper (JP9)
The jumper selects the COM4 ports’ DCD and RI mode.
Description
COM4
Function
Jumper Setting
Pin 1=5V
Pin 1=DCD
(Default)
Pin 8=12V
Pin 8=RI
(Default)
Jumpers and Connectors
15