Features: External USB Sound Card Ugreen usb audio adapter aims to solve your problems of missing audio adapter, or 3.5mm audio adapter no working, greatly immerses yourself in the fantastic audio world. Multi-function Model: 3.5mm earphone port, 3.5mm mic port, 2-in-1 3.5mm port, microphone-mute button, earphone-mute button, with volume control; 15cm/100cm cable length available. Brand Name : UGREEN Interface Type : USB Channels : 2 Type : External Product Name : USB sound card Specification - Dimension: 74 x 34 x 15.5mm (LxWxH) - Output: (1) 3.5mm headphone jack (2) 3.5mm mono microphone jack (3) 4-pin combo Mic/headphone jack (Only support CTIA) - SNR: ≥85dB - Sampling Rate: 16bit 48KHz - Time Delay: 40 - 50mS - Frequency response: 20Hz - 20KHz - With function of disabling headphone Mic and volume control - No driver required for Windows/Mac OS/Linux Important Note - Ensure usb audio adapter is set to be your primary playback and recording device in your control panel or system preferences. - The 4-pin combo Mic/headphone jack only support TRRS CTIA standard, does not support TRRS OMTP standard - The input of microphone jack and combo Mic/headphone jack only support mono - Please make sure your phone supports OTG function when using it on the phones Package Contents: 1 x External USB Sound Card