USB audio adapter is ideal to replace your faulty sound card or audio port, it adds a mono microphone-in and a stereo audio-out port to your computer through a USB port, which enables you to connect your existing headphones, headset, speakers, or microphone with 3.5mm jack to your PC through a USB interface.
Configuration Instructions
Windows:
* Right-click on the sound icon in the taskbar;
* Select Playback or Recording devices;
* Adjust the volume on the computer and in the application.
Mac:
* Go to System Preferences > Sound > C-Media USB Headset > Output or Input > Volume