2/4Port RS422/485 Serial PCI Express 2.0 Card Benefits and features Reliable asynchronous fullduplex serial communication over twisted pair or shielded cable, suitable for demanding serial links in industrial or home workshop environments. XR17V358 series multiI/O PCIe controller with industrystandard 16C550 UART compatibility, enabling costeffective connections to a wide range of machines and software. Automatic IRQ allocation simplifies system setup, while builtin DCDC isolated power provides protection against ground interference and noise, improving reliability in electrically noisy environments. Flexible I/O options: choose 2port or 4port RS422/485 serial interfaces on a PCI Express 2.0 card, delivering performance serial communication for various applications. PCIe 2.0 performance: designed for solid data transfer and stable operation in both smallscale and more demanding installations. Specifications and compatibility Interface: PCI Express 2.0 card with 2 or 4 RS422/485 serial ports Protocol/compatibility: Asynchronous fullduplex serial communication; compatible with industrystandard 16C550 UART Cable support: Works over twisted pair or shielded cable Power and protection: Builtin DCDC isolated power; automatic IRQ address allocation for easy installation Target use: Home workshop and factory floor environments requiring robust RS422/485 serial connectivity Use scenarios Factory automation and industrial control: Connect PLCs, HMIs, remote I/O devices, and sensors using RS422/485 ports for reliable data exchange in harsh environments. Laboratory data acquisition and instrumentation: Interface multiple serial instruments, data loggers, oscilloscopes, and controllers to a single host PC for synchronized measurements. Retail, POS, and embedded systems: Integrate serial printers, barcode scanners, payment terminals, or access control devices into a compact PCIe solution with scalable port count. Notes The card emphasizes ease of installation, compatibility with common UART standards, and protection against groundrelated issues through isolated power. It is suitable for both professional industrial deployments and advanced home workshops that require stable multiport serial communications.