Supports asynchronous full duplex communication over twisted pair or shielded cable, suitable for factory settings or home workshops. Enhances connectivity with 2/4Port RS422/485 Serial PCIe 2.0 Card, delivering performance serial communication for home and industrial applications. Features XR17V358 series Multiple I/O PCIe controller, paired with industrystandard 16C550 UART, enabling costeffective connections for industrial machines. Automatic IRQ address allocation and builtin DCDC isolation power provide easy installation and protection against ground interference. Applications Factory automation and PLC integration: reliable RS422/485 links to PLCs, sensors, and motor controllers over twisted pair or shielded cables, with stable performance in noisy environments. Home workshop setups: add multiple serial interfaces to a PC for CNC controllers, microcontroller projects, or other serial devices requiring robust communication. Industrial equipment monitoring and testing: collect data from serial instruments and peripherals with protection against ground loops, suitable for test benches and monitoring stations.