Thanks. Maybe I'll have to find an old laptop with a DB9 port and see if it could run RPM2 without issues. A 100' DB9 cable out to the garage isn't desirable.I personally have never had RELIABLE success with any USB to RS232 converter and thus am unable to recommend their usage, particularly on radios that are easy to brick and hard/expensive to recover. Stick with computers that have native serial port support. That's my recommendation.