Features 1.Bare plate is easy for you to find out the material is good. 2.Small volume makes it easier to carry with,portable and convenient. 3.It equipped with an USB interface,just plug in and use. 4.It can also replace traditional audio card directly. 5.The output analog signal of it can directly drive the earphone or active speaker. Specification Features: Bare plate is easy for you to find out the material is good. Small volume makes it easier to carry with,portable and convenient. It equipped with an USB interface,just plug in and use. It can also replace traditional audio card directly. The output analog signal of it can directly drive the earphone or active speaker. No drive program is required.Fit for WIN2000,WINXP,WIN3003. Specification: Chip:CM108 Input and Output:3.5mm Green Earphone Plug and 3.5mm Microphone Plug Package List: 1*USB Audio Card Package List Note: 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.