Can't switch between audio devices.

I have a b450 mobo and after installing the realtek audio driver i'm unable to switch between my audio devices from the audio icon in the taskbar. My headphone is connect to the front io panel and my speaker is connected to the rear green colored line audio jack. In the Realtek audio console software there is a option in device advance settings which is "Disable front panel popup dialog", if I check this the sound comes from both the speaker and the headphone and if I uncheck that then the sound only comes from the headphones. But i should have the way to change the playback device from the sound icon in the taskbar. Some more info is that, I can change the playback device if i uninstall the realtek audio driver but then again this way results my computer output sound to be captured my by mic in the headphones like the mic peaks the game audio or other audios while playing them.