Dynamode USB-SOUNDCARD7 - USB 2.0 Virtual External 7.1 Surround Sound Adapter Replaces the need for a traditional Sound Card -Virtual 7.1 Surround Sound experience Advanced C-Media 108 or equiv. Chipset -Plug n Play USB interface  installs in seconds 1x 3.5mm audio Jack; 1x 3.5mm microphone Jack - Compact and stylish design Built-in digital Class B amplifier Ideal for Games, DVD entertainment and businesses - Integral Volume, Mute and LED functionality