in my current PC, i added a Serial card (only 1 COM port) and in the control Panel>> system>>>Hardware >>>> Device manager >>>>> PORTs(COM & LPT) >>>>>>> card name PCI Serial PORT... >>>>>>>>>>>>proprieties >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> PORT SETTINGS>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> advanced

i can change the default COM name. But i don't know for your card