4-Port PCIe to RS232 Serial Port Expansion Card with 5V/12V Power Supply - 9-Pin COM Port Adapter 1-to-4 Multi-Port RS232 Card for Industrial Control, Automation, and Legacy Devices

"High-Speed & Stable Performance", Equipped with advanced AX99100 chipset for enhanced compatibility, ultra-low power consumption, and reliable data transmission. Each port supports speeds up to 920.6Kbps, ensuring seamless connectivity for industrial devices.
"Flexible Power Supply Options", Features a SATA power interface and supports 5V/12V dual-voltage input via DB9 Pin 1 or Pin 9. Effortlessly power diverse serial devices (e.g., scanners, PLCs) without external adapters.
"Wide Compatibility & Easy Installation", Works with PCIe X1/X4/X8/X16 slots and supports Windows XP/Vista/7/8/8.1/10/11. Gold-plated PCIe contacts resist oxidation for superior conductivity and long-term durability.
"Industrial-Grade Design", Includes a 1-to-4 serial port splitter cable for expanding connectivity. Ideal for industrial PCs, POS systems, CNC machines, and legacy equipment requiring stable RS232 communication.
"Multi-Device Support & Future-Proofing", Built for demanding environments, this card ensures uninterrupted operation with high-speed data transfer, robust EMI shielding, and broad device compatibility (printers, sensors, etc.).