1. This is a USB to D-SUB 15-PIN DB15 Female Adapter for RS232 serial communication. It enables seamless connection between USB devices and those requiring a D-SUB 15-pin interface. 2. With a length of 3 metres, it provides sufficient cable length for various setups. You can easily connect your computer or other USB source to devices like older monitors, printers, or industrial equipment. 3. Designed for reliable RS232 serial communication, it ensures stable data transfer. This makes it suitable for applications where accurate and consistent data exchange is crucial. 4. The female DB15 connector allows for straightforward attachment to male D-SUB 15-pin ports. It simplifies the connection process and reduces the risk of incorrect installations. 5. Ideal for both home and professional use, this adapter cable is a convenient solution for establishing serial communication. Whether for DIY projects or office setups, it meets your connectivity needs. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.