SYSTEM SUPPORT: Only Win7/Win8/Win8. 1/Win10(need driver), (Not work with Mac OS, Linux,car stereo systems,xbox,ps4 or TVs) support Multi languages. SPECIFICATIONS: Bluetooth 5.0+ EDR, it is backward compatible with Bluetooth2.0/2.1/3.0/4.0/4.2 Dual-mode Bluetooth transfer, compatible Full-speed USB 2.0 interface, USB 1.1. MINI SIZE: Extremely compact USB adapter allows you to leave it on laptop or PC, no need to remove, without blocking surrounding USB ports, save space. FAST AND FURTHER: Fast and further working distance than Bluetooth 4.0 Supports Bluetooth speakers, headphones, headsets, keyboards, mice, and more. Can work with 7 devices at the same time. Can work with Bluetooth printer and stereo headphone maximum transfer rate up to 3Mbpsand transmission distance up to 33ft/10M in open space. (NOTE: Operation range can be affected by physical obstructions and wireless interference). BLUETOOTH 5.0 DONGLE: Applies the latest Bluetooth 5.0+EDR adapter, Bluetooth low energy. The anti-interference ability has been increased, new technologies have been adopted to reduce the loss of transmission efficiency caused by interference in the 2.4 GHz band.