SBC86840 Series All-In-One Mini ITX Board User’s Manual
Jumpers and Connectors
10
2.3.1 COM1 Mode Select Jumper: JP4, JP5, JP6
These jumpers select the COM1 port’s communication mode to
operate RS-232 or RS-422/485.
Description Function
Jumper Setting
RS-232
(Default)
JP6
JP5
JP4
RS-422
JP6
JP5
JP4
COM1 Mode
Select
RS-485
JP62
JP5
JP4
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