2/4 Port RS422/485 Serial PCIe 2.0 Card with XR17V358 controller Key benefits Reliable performance serial communication: supports asynchronous full duplex data transfer over twisted pair or shielded cable, enabling flexible industrial and home workshop wiring. Flexible port configuration: available in 2 or 4 RS422/485 serial ports to match your device count and topology. Industrystandard compatibility: uses the XR17V358 series multiple IO PCIe controller with a 16C550 UART for broad software and device compatibility. Easy installation and reliable operation: automatic IRQ address allocation minimizes conflicts and simplifies setup. Strong protection and isolation: builtin DCDC isolation power provides protection against ground interference and noise, improving signal integrity. Modern and compatible interface: PCI Express 2.0 card design delivers solid performance on contemporary motherboards while maintaining compatibility with legacy serial devices. Costeffective connection for industrial machines: designed to deliver dependable serial communication for both and legacy equipment in an economical package. Specifications and features Ports: 2 or 4 RS4,22/485 serial interfaces Controller: XR17V358 series Multiple I/O PCIe controller UART compatibility: Industrystandard 16C550 UART Interface: PCI Express 2.0 card Isolation and protection: builtin DCDC isolation power for ground interference protection Cable support: asynchronous full duplex communication over twisted pair or shielded cable Installation: automatic IRQ address allocation for easier setup Applications: suitable for home workshops and industrial environments requiring robust serial connectivity What you get (usage and compatibility) A PCIe 2.0 card designed to deliver performance RS422/485 serial communication for both smallscale and industrial deployments. Compatible with systems that rely on 16C550 UART based serial software and drivers, while leveraging XR17V358 IO controller for efficient port management. Use scenarios Industrial automation and machine control: connect PLCs, sensors, remote I/O, and motor controllers via RS422/485 to a single PC for monitoring, data logging, or control tasks. CNC and machining environments: integrate multiple serial devices such as servo drives, encoders, or handheld programming interfaces with realtime updates and reliable communication. Building automation and data acquisition: link meters, controllers, and multipoint sensors across RS422/485 networks for centralized data collection and monitoring in facilities or labs. Notes This card is designed to provide a costeffective, reliable serial interface solution that fits both home workshop projects and industrial machines, with easy installation and robust protection against interference.