The ICUSBAUDIO2D External USB Sound Card lets you add an SPDIF digital audio output and standard 35mm analog audiomicrophone connections to your system through USB - a convenient way to bypass or replace an internal sound card without having to open the computer case For home-theater quality sound the USB DAC (digital-to-analog converter) offers 96KHz 24-bit sampling rates for both playback and recording and a 35mm SPDIF port with support for Dolby Digital 51 surround sound (AC3) and DTS pass-through (Note 51 surround sound is supported in Windows only) This versatile USB audio adapter features an integrated 35mm 4-position TRRS connection for your headphones or combination headsetmicrophone Also a convenient external volume control for quick adjustments a hardware EQ switch for Bass or Treble boosting and an LED status bar to display the current sampling rate Backed by a StarTech 2-year warranty and free lifetime technical support  96KHz 24-bit Hi-Fi USB Audio  SPDIF digital output with AC3 (Dolby Digital) and DTS pass-through support  51 Surround Sound supported (Windows only)  35mm headphonemicrophone ports  4 position TRRS headset with Mic supported  Hardware volume knob and BassTreble boost EQ switch  LED sample rate indicators  16in attached USB cableCable Colour BlackCable Length 0406 mCase Colour BlackConvert From 1 - 35 mm Mini-Jack (3 Position) Female • 1 - 35 mm Mini-Jack (4 Position) Female • 1 - 35mm Mini-Toslink (SPDIF; Optical) FemaleConvert To 1 - USB A (4 pin) MaleDepth 47 cmForm Factor Media Interface ConverterHeight 16 cmProduct Type USB Audio AdaptorWarranty 2 YearsWeight 036 kgWidth 46 cm