Features: 2 Port to RS232 Port Adapter provides double 9 pin ports for simultaneous device connectivity, featuring plug and play installation. This expansion card ensures stable transmission and easy installation in standard slots without requiring external power supply. Ideal for IT professional, industrial engineers, and automation specialists requiring multi device connectivity for equipment, LED controllers, and device control applications. Perfect for real time data acquisition in manufacturing facilities, touchable screen communication setups, railway ticketing systems, and environments demanding simultaneous control of printers, modem Offering configuration to maintain workflow continuity in critical operational Specifications: Component:Plastic Size:Approx.12cm/4.72inch Package Includes: 1Pc Expansion Card note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.