Bundled with advanced sound simulation software.It turns your stereo speaker or earphones into 7.1 channel environment.No drivers required, plug and play, instant audio playback.Compatible with all major operation systems.USB powered mode in external power required.Great performance, no noise or current interfere.With a LED indicator light.With 3.5mm port to connect speaker or earphone.Dynamic sound effect.Easy to switch from speaker and earphone mode.Type: Sound CardMaterial: Aluminum AlloyInterface: USBChip: HS-100BFeatures: Easy to Use, Plug & Play, Good Sound Effect, DurableSize: 3cm x 2.5cm x 1cm/1.18" x 0.98" x 0.39" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 xSound Card