External USB Sound adapter - USB Audio Adapter includes a stereo headphone output jack and a mono microphone input jack. It can bypass the defective sound card or the faulty 3.5mm audio port of your laptop/desktop system and regain the audio function . Save the cost of replacing a failed sound card. Computer Connector: USB Male Headset/Speaker Connector (Green): 3.5mm Female Microphone Connector (Pink): 3.5mm Female Cable Length:15cm System requirements: for 11/10/8.1/8/7/Vista/XP for OS 8.6 or above for Linux for /4 Note:The USB interface on for does not carry audio signal, so this usb audio adapter does not work with for . Configuration Instructions: for : 1. Right-click on the sound in the taskbar; 2. Select Playback or Recording devices; 3. Adjust the volume on the computer and in the application. for : Go to System Preferences → Sound → C-Media USB Headset → Output or Input → Volume Colour:Gray Material:ABS Package Contents: 1 * Microphone Speaker Audio Interface Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.