1. This is a 3-metre USB to D-SUB 15-PIN DB15 Female RS485 Serial Programming Communication Cable. It a convenient solution for establishing connections between USB-enabled devices and those requiring a D-SUB 15-pin interface. 2. The cable is designed for serial programming and communication purposes. It enables seamless data transfer and communication in RS485 serial systems, facilitating efficient interaction between different components. 3. With a length of 3 metres, it provides flexibility in positioning your devices. You can easily connect devices at a suitable distance without being restricted by short cable lengths. 4. The DB15 female connector ensures a secure and stable connection. It is specifically crafted to fit well and maintain reliable electrical during data transmission. 5. Ideal for various applications where RS485 serial communication is needed, such as in industrial automation, networking, and certain programming setups. This cable simplifies the process of achieving reliable and effective communication.