USB to DB25 Male 3 Meters Serial Cable RS232 Port Adapter for Data Transfer 1. This is a USB to D-SUB 25P DB25 MALE ADAPTER, designed for RS232 serial communication. It allows you to connect USB devices to D-SUB 25P ports easily. 2. The adapter features a 3-metre cable, providing sufficient length for various connection needs. You can use it to establish stable serial communication between different devices. 3. With its reliable performance, it ensures accurate data transmission in RS232 serial communication scenarios. It's suitable for both home and office use. 4. The DB25 male connector is compatible with a wide range of equipment that supports D-SUB 25P interfaces, enabling seamless integration into your existing setup. 5. This adapter simplifies the process of setting up serial communication, saving you time and effort. It's a convenient solution for those who need to connect USB and D-SUB 25P devices for data transfer.