AX99100 Based PCIe RS232 Expansion Card performance AX99100 chip delivers up to 920.6 KBPS RS232 communication rate for fast, reliable serial data transfer. Interface options: supports either 2 or 4 RS232 ports via standard DB9 connectors. PCIe compatibility: compatible with PCIe slots X1 and X16, available in different length configurations to fit various chassis. Port expansion: adds 2 or 4 additional DB9 ports to connect external devices, enabling larger serial I/O footprints. Practical benefits: easy integration into existing PCIe systems, scalable serial connectivity, suitable for multidevice RS232 environments without complex wiring changes. Key attributes: purpose built for RS232 serial communication, compatible with standard DB9 interfaces, supports PCIe installation in common slot variants, expandable to accommodate more devices. Use scenarios Manufacturing or warehousing PCs need multiple serial connections for barcode scanners, label printers, and CNC controllers, enabling streamlined data capture and control. Data centers or network equipment setups require serial console access to multiple devices, improving management and troubleshooting efficiency. Industrial automation or lab workstations that collect data from sensors and instruments benefit from expanded DB9 ports for reliable RS232 communication. Reliability and simplicity: designed to extend existing systems with minimal configuration, maintaining stable performance across connected devices.