Yes the IC 7300 has a built in sound card. In Windows the laptop speakers and mic are set as default. Everything works fine until I start up the WJST software. Once it’s up and running it changes the default to the USBCodec. That’s my issue. When I used the same laptop and was using a music or movie app then start up Flidgi using a IC 706MKllG and a Signalink everything worked fine. It’s only since I starting using WSJT to do FT 8