NoteThis product supports Win 7/8.1/10/11 system, Win 8.1/10/11 supports plug and play, and Win 7 needs to be installed with drivers. This product is not supported on Mac OS/IOS system. 5.3 Bluetooth adapter is a new product with high version and high speed, with strong compatibility, high speed and stability, and longer receiving distance. Applicable operating system: it supports Windows7/win8.1/win10/11 mainstream operating system! (Win8.1/10/11 is used without driving) Realize wirele connection between computer and other Bluetooth protocol devices (Bluetooth headset/speaker/mouse/keyboard/gamepad/mobile phone/printer, etc.) for audio, data and image transmiion. Product features: 1.RTL8761BW chip, which truly conforms to the technical specification of Bluetooth 5.3, has dual-mode low-power transmiion. 2. Longer transmiion distance: 10-20m long transmiion distance (no barrier), strong signal. 3. More stable transmiion rate: 3Mbps transmiion rate, providing high-speed file and audio data transmiion. 4. Original driver management software: REALTEK driver management software is easy to use, powerful and supports a variety of application extensions. 5. Ultra-low delay speed link, intelligent sleep wake-up to save energy, 24-bit CRC check to resist interference, adaptive frequency hopping to reduce crotalk. 6. Complete backwards compatibility Bluetooth 2.0, Bluetooth 2.1, Bluetooth 3.0, Bluetooth 4.0, Bluetooth 5.0, Bluetooth 5.1 and other specifications. 7.USB2.0 interface is more universal, and the ultra-mini body is portable. Packing list: Bluetooth 5.3 Adapter *1 English instruction manual *1