... 2.1+EDR) 2.OS supported :windows 7, vista ,xp 3.Dual-mode Bluetooth fully qualified Bluetooth V4.0 specification USB Dongle, support Dual-mode ... . KeFeatures:Bluetooth V4.0 class2 (also compliant Bluetooth 2.1+EDR)OS supported :windows 7, vista ,xpPlug and playDual-mode Bluetooth ... tec.RoHS compliant BQB, CE, CE and FCC Applications:PC notebooks, netbooks and desktops USB DongleTV set-top boxes General ...