Note: Windows 8.1/10/11 is driver-free, plug and play. Windows 7 requires driver installation. This product is not supported on Mac OS or iOS systems. Features: 1. Equipped with a genuine Bluetooth 5.4 chip, compliant with Bluetooth 5.4 technical specifications, LMP 13.X, supporting BLE/EDR dual-mode low-power transmission. 2. Extended transmission distance up to 150 meters (open field), enhanced antenna design for strong signal performance. 3. High transmission stability with a data rate of up to 3 Mbps, enabling fast file and o data transfer. 4. Driver-free operation on supported systems; plug-and-play functionality without the need for CD-based installation. (Driver required for Windows 7; driver-free for Windows 8.1/10/11.) 5. Ultra-low latency connection, intelligent sleep and wake-up mode for energy efficiency, 24-bit CRC error checking for interference resistance, adaptive frequency hopping to minimize crosstalk. 6. Backward compatible with Bluetooth 2.0, 2.1, 3.0, 4.0, 5.0, 5.1, and 5.3 devices. 7. USB 2.0 interface (compatible with USB 3.0 ports). 8. Supports simultaneous connection to up to 7 Bluetooth-enabled devices, enabling wireless connectivity between your computer and various Bluetooth-compatible peripherals such as headsets, speakers, mice, keyboards, gamepads, smartphones, and printers for o, data, and image transfer. 9. Advanced technology enables one-time pairing with automatic reconnection upon subsequent use, eliminating the need for repeated pairing. Package Included: 1 x USB Bluetooth 5.4 Adapter