External sound card with built-in line input, microphone input, and SPDIF input. True multi-channel surround sound for DVD movie soundtracks or MP3 files. Replaces existing sound card in PC, no need for a computer sound card. 6 independent surround channel outputs including front left, front right, rear left, rear right, center, and subwoofer. Advanced USB-based surround sound converter with simulated 6-channel output. Item Name: External Sound Card Material: Metal Features: Volume Control, Extension Cable, External Size Details: L: 8.9cm/3.5", W: 6.9cm/2.72", H: 2.1cm/0.83" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x External Sound Card