Driver-free USB sound card, external computer sound card, laptop sound card, CM108 USB sound card chip Open board design, visible materials, compact and portable Input and output: 3.5mm green headphone jack, 3.5mm microphone jack USB interface, plug-and-play, replaces traditional sound cards (directly replaces broken computer sound cards) Output analog audio signal can directly drive headphones or power speakers Hign-concerned Chemical:None Type:Voltage Regulator (The product Color: As Shown Material: PCB Package Contents: 2 * Voltage Regulator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.