Features: Converts laptop USB to RS232 serial interface, enabling efficient and convenient connection to serial devices such as printers Supports RS232 serial communication, remote power management, and full automatic handshake protocol Built with professional-grade chips for stable signal transmission, reliable performance, and broad compatibility Constructed with PVC material for insulation and flame retardant properties; nickel-plated connectors enhance 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 type and plug configuration before purchase. This product features a 9-pin RS232 plug. Confirm compatibility with your device to avoid errors 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 Allow 0-1cm measurement deviation due to manual measurement Package includes: 1 x USB to DB9 RS232 Connector Cable