1. Provides a simple and convenient way to connect any USB devices and parallel interface with 25 pin RS232 2. Design ideal for users who only have USB ports 3. Fully compatible with USB 2.0 4. Suitable for PDA and Modem 5. Powered by USB bus at full speed and communication 6. System requirements: Windows 10/8/7/98/2000/Me/XP to available USB port
