[site removed] USB Sound Card SPDIF Digital Audio Stereo Mic ICUSBAUDIO2D BlackThis external USB sound card adds S/PDIF digital audio output and standard 3.5mm analog connections to any laptop or PC without opening the computer case. It delivers 96KHz and 24-bit audio quality for home-theater sound, with support for Dolby Digital 5.1 surround and DTS pass-through on Windows systems. The adapter includes a hardware volume knob and bass/treble boost equalizer, plus LED indicators showing sample rate status.UPC065030852296