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For industrial embedded systems, interface compatibility can be just as important as computing performance. A processor may support a particular interface, but that does not mean every RK3568 mainboard exposes it.

Ethernet connectivity is important for industrial gateways, networked controllers, and equipment monitoring systems. Some RK3568 designs support dual Gigabit Ethernet, which can be useful for connecting separate networks or communicating with multiple devices. Confirm the actual Ethernet configuration, controller implementation, connector type, and driver support.

UART, RS232, and RS485 are common requirements for communicating with PLCs, meters, sensors, motor controllers, and legacy industrial equipment. If the application depends on serial communication, verify the number of available ports, voltage levels, isolation requirements, and connector pin assignments. UART support at the processor level does not necessarily mean a board includes a ready-to-use RS485 port.

CAN and other field interfaces may be necessary for specialized controllers, vehicles, and distributed equipment. Check whether the board exposes the required controller signals and whether additional transceivers or protection circuits are needed.

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