The Plugable external sound card (USB-AUDIO) is an easy way to instantly gain a headphone and a microphone jack to your existing USB audio class enabled system - easy headphone jack to USB connection. Featuring a clean, compact black design, this USB audio adapter installs without needing to load any necessary drivers. It is as simple as setting this adapter as your default audio output and input device and off you go, listening to your favorite tunes and recording with ease. This audio adapter really shines with custom Linux development boards like the Raspberry Pi, Beaglebone Black, and other unique scenarios such as a "Hackintosh" setup where the on-board audio devices do not have Mac drivers. Compatibility No drivers necessary. Compatible with any standard USB Audio Class enabled system including Windows XP - 11, Linux, Mac OS X and Chromebook. The USB Type A connection gets plugged into the computer and you gain one 3.5 mm (1/8 inch) stereo output jack and one 3.5 mm (1/8 inch) stereo microphone input jack. The USB-AUDIO is USB bus powered, so no external power is needed. Important Note: If the microphone does not seem to work and you have a TS microphone, a 3.5 mm (1/8 inch) mono to stereo adapter is necessary to adapt the microphone from TS to TRS. Most operating systems support multiple audio outputs, but only allow a single one to be enabled at a time. So, this manual step of selecting the right audio output from the operating system's built-in audio control panel is essential.