Sheen SOUTSRS USB to Serial RS232 Cable (Blue) 1.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. USB specification revision 1.1 and 2.0 compliant 3.Support RS232 serial interface (both DB25 and DB9) 4.Support over 1Mbps data transfer rate 5.Support remote wake-up and power management 6.Support Windows 98/SE/ME/2000/XP/Vista/7 7.Suitable for PDA and modem.