This USB 2.0 Virtual 7.1 Channel Sound Adapter is a highly flexible audio interface which can be used either with Desktop or Notebook system, it turns your stereo speaker or earphone into 7.1 Channel environment. No drivers requires, just plug and play for instant audio playback, also compatible with all major operation system.Features & Specifications:USB bus-powered mode, no external power required Functional Keys: Microphone-Mute, Speaker-Mute, Volume-Up, Volume-Down Connectors: USB Type-A, stereo output jack, Mono microphone input jack Support Xear 3D, the virtual 7.1 channel sound simulation software for Windows XP / Vista No driver required for Windows 98SE / ME / 2000 / XP / Server 2003 / Vista, Linux, MacOS Surround Sound: Virtual 7.1 Jack: 2 x 3.5mm (USB cable included) USB 2.0 full-speed 12Mbps specification Color: White System Requirement: Desktop or notebook PC with a USB port Stereo active speaker or stereo earphone Windows 98SE / ME / 2000 / XP / Server 2003 / Vista, Linux, MacOS 10 or higer Xear 3D (Virtual 7.1 channel sound simulation software) for Windows XP Vista Package Includes:1 x USB Sound Card Adapter