Panlong Optical Toslink/ Coaxial/ USB Digital to Analog Audio Converter Adapter USB Sound Card with Headphone Amplifier Digital audio inputs: one Optical (TOSLINK), one Coaxial and one USB (Type-B) with three position input select switch Supports sample rates including 32kHz, 44.1kHz, 48kHz, 96kHz and 192kHz, up to 24-bit resolution; Ultra low jitter and high fidelity design using new receiver & D/A converter chips Analog line level outputs: one pair of stereo RCA, one 3.5mm stereo headphone plug Adjustable headphone output level control for personal listening USB is Plug-and-Play for Windows XP/Vista/7/8/8.1 - no additional software or driver required; Package includes 1x Digital to Analog Audio Converter, 1x USB cable and 1x User Manual. One-year warranty by Ace Deal