【Bluetooth adapter 5.1】Applies the latest Bluetooth 5.1+EDR adapter, Bluetooth low energy.,compared with Bluetooth 5.0, it has better connection stability and anti-interference ability, and effectively reduces the possibility of transmission loss and signal interruption caused by interference in 2.4Ghz frequency band. Windows 8/ 8.1/10/11 plug&play, Win7 Driver-Needed (contact us via amazon message or install the driver from the included mini CD) (Not suitable for Mac OS, Linux, TV, XBOX, Car Stereo Systems) | 【Lightning speed and stable connection】Both BLE and EDR technologies are used, Bluetooth 5.1 version to offers high speed up To 3 mbps Wireless Transmitter Enables Long Range Connectivity Up to 20m in open space , backward compatible Bluetooth 2.0/2.1/3.0/4.0/4.2/5.0,Dual mode Bluetooth transmission, and full speed USB 3.0/2.0 interface. Bluetooth receiver for pc 5.1 has lower energy consumption and faster and more stable transmission performance, which minimizes the delay of the device during Bluetooth connection, bringing you a smooth experience without delay worries. | 【High Compatibility】Ponbohu Bluetooth adapter can connect 7 devices at the same time, such as Bluetooth headset, speaker, keyboard, mouse, mobile phone, game controller, tablet, printer, etc, easy to connect, is ideal for leisure and entertainment/work. | 【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 | 【LIFETIME WARRANTY SUPPORT】 The fees you pay not only include a high-quality Bluetooth 5.1 Adapter, but also the most professional After-Sales service of ponbohu on the market. Go to the ponbohu product page and click the seller's name. To click [Ask a question]. Whatever issues, please contact us in time to activate your lifetime warranty. Don't waste any of your money.