100% brand new and high quality. Add a virtual 7.1 channel surround sound to your computer with this adapter. Plug & Play and easy to use. Requires for 98SE, ME, XP, Vista, 7, Server 2003, Server 2008; Linux. Must use a USB 2.0 Port. Plug & Play, no driver required. Use with desktop, notebook, , or Linux. Features Volume Up/Down, Microphone Mute, Headset Mute Requires a USB 2.0 Port Stereo output jack, mono microphone input jack Package Content: 1X External 7.1 Channel USB Sound Card Audio Note:We don't offer retail package,but we will pack it well before shipped out. carrying.Easy to apply to all microphones.A convenient and practical invention is widely used.