PCI Express 4-Port Serial COM Expansion Card, PCIe to DB9 RS232 Serial Adapter Card with Low Profile Bracket, Industrial 9-pin Port COM Controller Card for Desktop PC

Built with a durable PCB board and gold-plated connectors, the card offers excellent anti-interference performance and long-term reliability, making it a cost-effective solution for adding multiple serial ports to your modern desktop PC.This PCIe expansion card adds four 9-pin DB9 RS232 serial COM ports to your system, allowing you to connect multiple devices at once, including industrial controllers, PLCs, CNC machines, POS systems, barcode scanners, modems, and other RS232-compatible peripherals. The high-performance control chips ensure fast, stable data transmission with standard RS232 communication, making the card suitable for continuous, reliable operation in industrial and commercial environments.

• "4-Port Serial Expansion": This PCI Express expansion card adds 4x DB9 RS232 Serial COM ports to your desktop PC, providing a reliable solution for connecting multiple industrial controllers, POS devices, barcode scanners, modems, PLCs, and other RS232 peripherals simultaneously.
• "Industrial-Grade Stable Performance": Built with high-quality control chips, the card ensures fast, stable data transmission and supports standard RS232 communication protocols, making it ideal for continuous use in industrial control environments and commercial applications.
• "Wide Compatibility & Plug-and-Play": Compatible with PCIe x1, x4, x8, x16 slots on standard desktop PCs. Supports Windows 11/10/8/7/XP and Linux operating systems, with plug-and-play functionality for quick setup and easy driver installation.
• "Dual Bracket Design for Versatile Use": Comes with both full-height and low-profile brackets, fitting both standard tower cases and slim/mini desktops, perfect for industrial control computers, compact office PCs, and limited-space workstations.
• "Durable & Anti-Interference Build": Features a robust PCB board with anti-interference shielding and gold-plated PCIe connectors for improved signal stability and wear resistance, ensuring long-term reliable operation even in demanding industrial environments.