... 0 + EDR compliant, backward compatible with v1.2 and 1.1USB interface fits both Desktop PCs ... ProfilesSupported: A2DP, Generic Access, Service Discovery Application, SerialPort, Dial-Up Network, Fax, File Transfer, LAN Access, Synchronization ... for external power supplySpecificationStandard: Bluetooth V2.0Chipset: 6626Frequency: 2.4~2.48 GHzSymbol rate: 3Mbps Antenna: IntegratedReceiving / Sending rang ...