USB external sound card.<br> Bare board manner, visible material, compact and easy to carry.<br> USB interface, plug and play, instead of traditional sound card (computer sound card is broken, can be a direct replacement).<br> Analog audio signals can be output to directly drive headphones or powered speakers.<br> No drivers in WIN2000, WINXP, WIN2003 system.<br> Name: External sound card Chip model: CM108, external crystal oscillator.<br> Output and input: 35mm green headphone socket, 35mm microphone socket.<br> The USB interface, plug and play, replaces the traditional sound card.<br> The output analog audio signal can directly drive headphones or output to active speakers.<br> Colour:blue Material:PCB Package Contents: 2 * Sound Card Chip Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing.<br> The measurement allowed error is +/- 1-3cm.