Features:The USB Virtual 7 1 Channel Sound Adapter is a highly flexible audio interfacewhich can be used either with Desktop or Notebook/Laptop systems; it turnsyour stereo speaker or earphones into 7 1 channel environment,No driversrequired,just plug and play for instant audio playback,also compatible withall major operation systemUSB bus-powered mode,no external power requiredConnectors:USB Type -A,stereo output jack,Mono microphone input jackFunctional keys:Microphone-Mute,Speaker-Mute,Volume-up,Volume-downDescription:No driver required for Windows 98 SE/ME/2000/XP/Server 2003/Vista,Linux,MacOCSystem requirement:Desk top or notebook PC with a USB port Xear 3D (Virtual 7 1Channel Sound simulation software)for Windows XP/VistaSpecifications:Size: 52*22*12mmColor: BluePacking Content:1 x 3D sound card