This versatile External USB Sound Card/Audio Adapter offers a high quality solution for upgrading desktop or notebook sound. Full 7.1 audio outputs via 3.5 mm mini jacks Optical S/PDIF input (pass through) and output Dual microphone input External ports: 2x TosLink (SPDIF; optical) female 8x 3.5 mm mini jack (3-position) female Connectors: 1x USB B (4-pin) female