SPECIFICATIONcomplaint with usb 2.0 full-speed (12mbps ) specification compliant with usb audio device class specification 1.0 compliant with usb hid class specification 1.1usb bus -powered mode , no external power required connectors usb typo -a ,stereo outputjack , mono microphone -input jack functional keys microphone -mute ,speaker mute , volume -up , volume down former-song , next -song ,stop /start include xear 3D the virtual 8.1 channel sound simulation software for windows xp/visa driverless- no driver required for windows 98SE /ME /2000/XP/WIN7 /WIN8 SERVER / 2003/ vista , linux , macOS