PCIe to 4-Port RS-485/422 Serial Card, High-Speed 9-Pin DB9 COM Port Expansion with Surge/Lightning Protection, Voltage Suppression Terminal Blocks

"Industrial-Grade Stability & Efficiency", Powered by the AX99100 high-performance chipset, this PCIe to RS-422/485 card ensures ultra-stable operation, enhanced compatibility, and low power consumption. Features TVS (Transient Voltage Suppression) protection to guard against surges, lightning, and voltage spikes. "Robust PCIe Design & Broad Compatibility", Built with a thickened gold-plated PCIe x1 connector for scratch-resistant, durable performance and secure data transmission. Supports PCIe x1/x4/x8/x16 slots, making it adaptable to various motherboards and industrial systems. "High-Speed Dual-Mode Connectivity", Delivers speeds up to 921.6K bps (RS-422/ 485: 300 bps\u2013120Kbps) for seamless data transfer.

Converts PCIe signals to balanced differential RS-422/485 signals, ideal for automation, PLCs, and long-distance communication. "Wide OS Support & Plug-and-Play Setup", Compatible with 32/64-bit Windows 10/ 8.1 /8/7/Vista/XP. Includes a 1-to-2 splitter cable and screw terminal blocks for quick installation and flexible wiring in industrial environments. "Reliable for Demanding Applications", Engineered for factory automation, CNC, IoT, and legacy device integration. Combines anti-interference signal stability with premium surge protection, ensuring 24/7 reliability in harsh conditions.