Virtual 7.1 USB Stereo External Sound Card (Black) for Mac apple . Virtual 7.1 USB Stereo External Sound Card for you to connect headphones or speakers, and a microphone to your computer without the need to unplug other devices!Features:Compliant with USB 2.0 and USB audio device specification 1.0, this USB to audio adapter couldn't be any simpler to install. Add a virtual 7.1 channel sound to your PC. Turn your stereo speaker / earphones into 7.1 channel environment. Compatible with both Desktop or laptop Notebook. Specification USB2.0 Full-Speed (12Mbps) Specification USB HID Class Specification 1.1 USB Audio Device Class Specification 1.0USB bus-power, no external power required! Connectors: USB Type A, Stereo output jack, mono microphone input jack Xear 3D virtual 7.1 channel sound simulation software for XP / Vista is included Functions keys: Microphone-Mute, Speaker-Mute, Volume-Up and Volume-Down LED indicators: Microphone-Mute Status, Activity Plug and Play. System Requirement Desktop or notebook PC with a USB port. Stereo active speaker or stereo earphone. Xear3D (Virtual 7.1 channel sound simulation software) Compatible with: Windows 2000, Server 2003, XP, Vista, Windows 7.Compatible With Mac MacBook Air MacBook MB063LL-A MacBook Pro MC373LL-A MacBook Pro MA896LL-A MacBook MB403LL-A MacBook Pro MA895LL-A MacBook Mid 2010 MacBook Late 2009 MacBook Pro MB133LL-A MacBook MB061LL-A MacBook MA699LL-A MacBook MB402LL-A Macbook Air MC505LL-A MacBook MA254LL-A MacBook MB404LL-A MacBook Pro MB134LL-A MacBook MB062LL-A MacBook MA701LL-A MacBook MA700LL-A MacBook Mid 2009 MacBook Pro MC374LL-A MacBook MB466LL-A PowerBook G4 M9969LL-A MacBook Pro MC226LL-A iBook G4 M9418LL-A iBook M8597LL-C MacBook MB467LL-A Macbook Air MC503LL-A MacBook Air MC234LL-A MacBook MC516LL-A MacBook Air MB543LL-A iBook G4 M9846LL-A MacBook Early 2009 MacBook MA255LL-A MacBook MB062LL-B MacBook MB061LL-B MacBook Air MC233LL-A MacBook Pro MC372LL-A MacBook Pro MC118LL-A MacBook Pro MB166LL-A