Features 1、Applicable Scenes: The PCIE 1X to 4 port RS232 expansion card is designed for wide applications in POS terminal and ATM, enabling seamless integration with a wide range of serial devices for enhanced functionality and efficiency 2、4 RS232 Ports: Boasting 4 RS232 serial ports capable of reaching data rates up to 115200Kbps, this expansion card ensures fast and reliable data transfer between devices, ideal for demanding industrial communicating needs 3、Wide Compatibility: Supporting modem control signals, this card guarantees seamless compatibility with a broad spectrum of serial devices, simplifying integration and maintenance processes across various industrial setups 4、Excellent Chip: For ASIX AX99100 main control chip, this adapter card seamlessly interfaces with PCI E 2.0 slots, delivering long lasting performance and excellent stability in industrial control and communicating system 5、Support System: Compatible with a multitude of operating system, for WINXP, for WIN7, for WIN8, for WIN10, for WIN11, and for LINUX, this expansion card facilitates easy integration into automation projects, ensuring stable running Specification Item Type: PCIE 1X to 4 Port R232 Card Main Control Chip: For ASIX AX99100 Interface: DB25 to 4x DB9 R232 Support System: For WINXP, for WIN7, for WIN8, for WIN10, for WIN11, for LINUX Package List 1 x Expansion Card 1 x Adapter Cable 1 x CD