Advantech MIC-3399 User Manual page 50

Figure 2.23 SIO UART1 to BMC UART2
SIO Uart1 Switch Mode

This item allows users to switch the SIO Uart1 mode to front I/O RJ45, J3, or
BMC Uart1.
When SIO Uart1-to-RJ45 is selected, the BMC Uart1 switch mode will be set to
J3 automatically. When SIO Uart1-to-BMC J3 is selected, the BMC Uart1 switch
mode will be set to RJ45 automatically. When SIO UART1-to-BMC Uart2 is
selected, the BMC Uart1 switch can be set to RJ45 or J3.
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