Features: The RS232 laptop extension is converted to a serial interface through USB, enabling efficient and convenient connection to a printer. Supports RS232 serial interfaces, remote power management, and fully automatic serial communication handshake protocol. Built with professional chips for stable signal transmission, ensuring reliable performance and strong compatibility. Constructed with PVC environmentally friendly materials, providing insulation and flame retardant properties. Nickel-plated connectors offer enhanced durability and reliability. Interfaces feature a thickened nickel plating layer, providing resistance to corrosion, acid, alkali, high and low temperatures, and extended service life. Note: Please identify the interface and plug type before purchasing. This product is an RS232 9-pin plug. Ensure compatibility with your printer's RS232 9-pin port to avoid incorrect purchase. Specifications: Item: USB to DB9 RS232 Connector Cable Material: PVC Cable Length: approximately 120cm / 47.24in, 200cm / 78.74in, 300cm / 118.11in Note: Due to lighting effects and shooting angles, slight color variations may occur. Please allow 0–1cm measurement deviation due to manual measurement. Package Includes: 1 x USB to DB9 RS232 Connector Cable