Introducing the 2 Port PCI Express RS232 DB9 Serial Port Card, a versatile and efficient solution for expanding your desktop or industrial equipment's connectivity. This PCIe Serial Expansion Card is designed to meet the needs of various applications, providing reliable performance and seamless integration. Dual Serial Ports: This PCIe RS232 card allows you to add two RS232 DB9 serial ports to your desktop computer or industrial equipment. By utilizing the PCI Express slot on your motherboard, you can easily enhance your system's connectivity options, making it ideal for various applications. PCIe X1 Interface: Featuring a full-size bracket, this expansion card is compatible with standard-sized PCs. It is based on the PCIe X1 interface and can operate in X1, X4, X8, and X16 slots, providing flexibility for different motherboard configurations. Wide Operating System Support: The card requires driver installation for various operating systems, including Windows XP, Vista, 7, 8.x, 10, and 11 (both 32-bit and 64-bit). For Linux users, it supports kernel versions 2.6.x, 3.x, 4.x, and 5.x, with reference to compiled source code, ensuring broad compatibility across platforms. 256 Byte Depth Support: This PCIe serial expansion card utilizes the ASIX AX99100 program, which supports on-chip 256-byte depth FIFO transfers. This feature enhances data transfer efficiency and is suitable for both Intel and ARM hardware platforms, ensuring optimal performance in diverse environments. Versatile Applications: The PCIe serial DB9 port card is perfect for connecting a wide range of devices, including POS systems, industrial measurement and control devices, security systems, logistics management devices, scanners, printers, and other serial DB9 port devices. Its versatility makes it an essential addition to any setup requiring reliable serial communication. Upgrade your system's connectivity with the 2 Port PCI Express RS232 DB9 Serial Port Card. Whether for industrial applications or personal use, this expansion card delivers the performance and reliability you need to keep your devices connected and functioning smoothly.