Please include the test result when requesting email support. You can contact us at web@fifine.cc.
After connecting via USB, it's normal that the blue indicator blinks for a few seconds and doesn't stay on.
Is "USB PnP Audio Device" seen by your Windows or Mac, or is it recognized as an unknown device?
🔔For the latest Windows users, to access the sound setting, please right-click the speaker icon at the bottom right-choose "Sound". Click "Sound Control Panel" at the upper right of the pop-up window.
If it is recognized and the level meter responds when you speak, but you still don't hear audio from the PC, have you selected the correct output device (computer or the mic) under system and software settings?
If the computer sees it as an unknown device, have you tested it out on a different computer? Tried to update and reinstall the unknown driver a few times on the same computer?