USB to RS-232 DB9 9 Pin Serial Adapter/Converter Cab
The USB to Serial/Parallel Adapter provides the connection between USB and the traditional RS-232 serial port.The adapter is designed for connections to Cellular phone, PDA, digital cameras, modems, or ISDN terminal adapters through your USB port. Since the adapter uses no IRQs, it is perfect if you need many serial devices attached to your PC.