Features: The AX99100 PCIE Serial Card Expansion Card is designed with a highperformance AX99100 chip, providing fast and stable serial communication. This PCIE serial card features 2 RS232 splitter connector, allowing you to connect multiple devices simultaneously and efficiently. For computer enthusiasts, IT professionals, and industrial users who require reliable and efficient serial communication for their devices. This AX99100 PCIE Serial Card Expansion Card is perfect for various applications in retail, manufacturing, and automation industries. Seamless data transmission and enhanced productivity with the AX99100 PCIE Serial Card Expansion Card, a reliable solution for all your serial communication needs on your PC. Specifications: Product name: Pcie to RS232 Serial Port Card Number of interfaces: 2 RS232 DB9pin Serial ports and DB25 Parallel Port Applicable slot:PCIE Product size: approx Mixed Chipset: AX99100 Chip Model：TXB077 -AX99100-4S Package Includes: 1PC x PCIe Card note: The colors deviationmight differ due to different monitorsettings, please kindly understand. There might be little error of size for manual measurement.