http://www.aliexpress.com/item/Trustworthy-USB-2-0-Virtual-7-1-Channel-Audio-Sound-Card-Adapter-For-Laptop-PC-Mac/2036947012.html

2015 Hot Sale USB 2.0 Virtual 7.1 Channel Audio Sound Card Adapter For Laptop PC Mac

Description:           

•     New and high quality.
•     Compliant with USB 2.0 Full-Speed (12Mbps) Specification
•     Compliant with USB Audio Device class Specification 1.0
•     Compliant with USB HID Class Specification 1.1
•     USB bus-powered mode, no external power required
•     LED indicators: Microphone-Mute States, Activity
•     Include Xear 3D,the virtual 7.1 channel sound effect
•     Driverless-No driver required for windows 98SE/ME/2000/XP/Server 2003/Vista/Windows7.Linux,Macos

 Specifications:

•     Lenth: 20cm (7.8 inch)
•     Color: White
•     Weight: 12g

System requirement:

•     Desktop or notebook PC with a USB port
•     Windows 98SE/ME/2000/XP/Server 2003/Vista/Windows7.Linux,Macos 10 or higher
•     Xear 3D(virtual 7.1 channel sound simulation software) for Windows XP / Vista
•     Stereo active speaker or stereo earphone
•     Mono microphone (Optional)

Package including:

•      1 x USB sound adapter 7.1 channel (without packaging)