Shell material: ab Sound card channel: 7.1 channel Interface type: USB2.0 Audio interface: input 3.5mm, output 3.5mm Colour: Black Indicator light: Microphone turn-on reminder light, sound card status reminder light System support: WindowsXP/Windows7 Packing method: blister packaging Support ordinary audio microphone, earphone USB2.0 interface. Plug and play, replace traditional sound card Multi-channel technical support. Achieve 7.1-channel dynamic sound effect Dynamic surround rotation sound field Analog speaker position automatic adjustment function Output level adjustment Convert analog signal to digital signal and save function Compatible with USB2.0 pure digital audio output, virtual 7.1 channel proceing function Packing list: USB7.1 independent sound card 1