Desktop PCIE to RS232 serial port card, 2-port PCIE to 232 serial port expansion card, 9-pin COM port adapter card

Dual-Port RS232 Serial Expansion: Professional PCIe adapter adds two independent RS232 COM ports with standard 9-pin DB9 connectors. Solves serial port shortage for legacy equipment, industrial devices, and specialized hardware requiring multiple simultaneous serial connections.

Full RS232 Signal Support: Each port provides complete RS232 functionality including TX/RX, RTS/CTS, DTR/DSR signals. Universal connectivity for serial mice, modems, printers, barcode scanners, CNC machines, PLC controllers, and industrial automation equipment.

PCIe Interface Reliability: Standard PCIe x1 card with dedicated chipset provides independent COM resources without IRQ conflicts. Superior performance compared to USB-to-serial adaptersstable communication for mission-critical industrial applications.

Plug-and-Play Installation: Automatic driver recognition on Windows 10/11, Windows 7/8, Linux, and legacy operating systems. Recognized as standard COM portsseamless integration with existing serial communication software and applications.

Industrial & Professional Use: Essential for point-of-sale systems, cash registers, label printers, data acquisition equipment, security systems, and manufacturing automation. Perfect for IT departments, system integrators, and facilities maintaining legacy serial infrastructure.