An external sound card with a USB interface allows you to equip any computer with an additional headphone output and microphone input. The small size of the card allows it to be used with mobile devices as well. The device is compatible with computers running Windows Vista/7/8/8.1/10, Mac OS 10.8.5, Linux Kernel 3.7 and many others. The card does not require additional drivers or installation, does not cause conflicts, so it can work in parallel with another sound card. Function buttons: Microphone mute button Mute button Volume down button Power flow indicator light Headphone/speaker input Microphone input Microphone mute indicator light Volume up button TECHNICAL SPECIFICATIONS: High quality Inputs: Headphone/Microphone Mini Jack 3.5mm Power supply: USB Sound system: 3D surround System Simulation: Stereo 7.1 Universal Color: black