SMAKN&Acirc; PCI to COM Dual Rs232 Serial I/o Port Card Adapter 2 Port 9 Pin PCI to COM Dual Rs232 Serial I/o Port Card Adapter 2 Port 9 Pin Ports PCI to COM 9-pin Serial Port RS232 Card Adapter Plug and Play, automatically assigned IRQ and I / O address Support PCI I / Q shared Transfer rate up to 1 Mbytes / sec