Asus SAMRT3000 V5 Q670 Manual page 22
Industrial motherboard
Table of Contents
7.
COM3 mode selection jumpers
B
A
C
Jumper
COM3_RX_SEL
COM3_485_EN1-2
Jumper setting of COM3 should be consistent with the setting of COM3 Control
in BIOS. Go to Advance > Serial Port Configuration > COM3 Configuration
> COM3 Control in BIOS.
Chapter 2: Motherboard information
2
1
Setting
RS232 (Default)
NA
RS485
RS485
RS232 (Default)
COM3_RX_SEL
A
4
6
3
5
RS232
NA
RS485
(Default)
B
C
Pins
1-2
3-4
5-6
3-4
2-3
2-15
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