Upgrade your system with this PCIE 4Port RS232 Serial Port Card Expand your connectivity with 4 independent 9pin standard serial ports, offering a builtin serial port data interface. Designed for POS and ATM applications, making it an ideal choice for system integrators in industrial automation. Each of the four RS232 serial ports supports communication speeds up to 250Kbps and provides modem control signals for compatibility with various serial peripherals. Enjoy stable and efficient data loss control with hotswap support. Supports multiple operating systems: Windows 7/8/10/LINUX. Specification: Type: Adapter Card Material: PCB System Requirements: For Windows7/8/10/LINUX Size: Approx. 12 * 9.5 * 2 cm / 4.72 * 3.74 * 0.78 inch Weight: 98 g Package List: 1 * Converter Card 1 * Adapter Connector 1 * Baffle Note: Please note that the old and new type of the product will be sent randomly, and make sure you will not mind before ordering.