1.2/4-Port RS422/485 Serial PCIe 2.0 Card provides high‑performance serial communication through RS422/RS485 interfaces via a PCI Express 2.0 slot. Available in 2-port or 4-port configurations to suit your needs. Key benefits - Easy installation: automatic IRQ/address assignment reduces setup time and avoids manual configuration. - Robust protection: DCDC isolation power helps guard against ground interference and improves reliability. - Flexible connectivity: supports asynchronous full duplex communication over twisted pair or shielded cable for versatile deployments. - Professional compatibility: designed for engineers and IT professionals who need to integrate multiple serial devices into a single system. - Proven performance: reliable serial I/O suitable for demanding environments. Specifications and features - Interface: RS422/RS485 - Bus: PCI Express 2.0 - Port options: 2-port or 4-port configurations - Power isolation: DCDC isolation power for ground protection - Communication: asynchronous full duplex over twisted pair or shielded cable Use scenarios - Factory automation: connect PLCs, sensors, and remote I/O modules to central control systems for synchronized data and control. - IT and development lab: attach multiple serial peripherals (meters, dongles, test gear) to a single host for testing and data collection. - Home workshop or small business: integrate serial devices such as CNC controllers, barcode scanners, or serial I/O devices into a single workstation. This card is built for reliable, straightforward integration of multiple serial devices, delivering compatible, high‑quality RS422/RS485 I/O in a compact PCIe 2.0 form factor.