I plugged mine into my unused Port 1, and set this up for FLARM in. This means I can quickly change back to paw GPS if I need to. But if you are using FLARM and keeping a separate PAW GPS dongle or mouse, you need to configure your FLARM device to output FLARM data only to PAW, not FLARM data and navigation data, or your PAW will be getting GPS data from 2 different sources at the same time, which might cause potential conflict.
Regards
Peter