My friend has an old BCD996XT scanner. It looks like it uses a similar programming cable that the BCT15X uses, but none of our computers have serial ports (9 pin). The BCD996XT has a programming cable which has a USB connector on one end and a 9 pin serial connector on other. Can someone recommend a 9 pin serial to usb adapter cable that will work with this radio? I searched on amazon but product descriptions rather vague.