This PCIExpress2.0 Card enables asynchronous full duplex serial communication over twisted pair or shielded cable, suitable for use in factory settings or home workshops. It features the XR17V358 series Multiple I/O PCIE controller and supports the industrystandard 16C550 UART, providing compatibility with a wide range of serial devices and a costeffective connection for industrial machines. 2 or 4Port RS422/485 Serial on a PCIExpress2.0 Card delivers reliable, performance serial communication for both home and industrial applications. Ideal for engineers and IT professionals who need to integrate multiple Serial devices into their systems seamlessly. Use scenarios Industrial automation and machine control: connect PLCs, sensors, and controllers that use RS422/485 signaling to centralize control and monitoring. Data acquisition and instrumentation: gather data from multiple serial instruments, meters, or test equipment for logging and analysis. Home workshop and lab setups: expand capabilities to support multiple serial peripherals for microcontroller projects, serial consoles, or testing benches.