SoundBot SB340 Universal Plug and Play Bluetooth 4.0 USB Adapter upports All Bluetooth Enabled Devices Such as Stereo Headset, Mobile Phone, Mice, Keyboard, Speaker, Gold Plated Connector Newest Bluetooth Class 2 Smart Ready Specification with V 4.0 Low Energy Technology. Backwards Compatible with Legacy Bluetooth Equipment Bluetooth 3.0, 2.1, 2.0 And 1.0 Equipment Enhanced Data Rata (Edr) Compliant for Both 2 Mbps and 3 Mbps Modulation Modes with Gold Plated Connector Plug and play Bluetooth USB adapter creates cable-free connections between your PCs and other Bluetooth devices such as Bluetooth enabled headsets, speakers, cell phones, keyboard or mouse at speeds of up to 3 Mbps, Supports windows 8, windows 7, XP, Vista, 2003, 2000 Me 64/32 bit, Standard: latest Bluetooth v4.0 Class 2 with EDR, The maximum communication speed: 30K-100k per second, Communication distance: 10 meters open space, Modulation: 2.4G Direct Sequence Frequency Hopping (FHSS) Transmit power: Class 2 level, Size and weight: 22x18x7 mm 2.5g