Friendly Reminder: If your computer lacks a CD-ROM drive to install the driver, you can download the Bluetooth driver from the GAROGYI website. The driver available for download via the following web URL: dropbox.com/s/3ktdqbq7egr50ee/Rtl5.3%20Driver.zip?dl=0. The content of the driver on the website is identical to that found on the CD. ? USB 2.0 interface for broad compatibility: The adapter's USB 2.0 interface ensures compatibility with a wide range of devices, and its ultra-miniature size allows for convenient portability. ? Full backward compatibility: The adapter is fully compatible with Bluetooth 2.0, Bluetooth 2.1, Bluetooth 3.0, Bluetooth 4.0, Bluetooth 5.0, Bluetooth 5.1, and other specifications. ? Ultra-low latency for lightning-fast connections: Benefit from intelligent sleep and wake functions to optimize energy efficiency, 24-bit CRC (Cyclic Redundancy Check) for interference resistance, and adaptive frequency hopping to minimize disruptions. ? Original manufacturer driver management software: The REALTEK driver management software, with its user-friendly interface and powerful capabilities, supports various application program extensions. ? Enhanced transmission rate: Enjoy a speedy 3Mbps transmission rate, facilitating high-speed transfer of files, audio, and data. ? Extended transmission range: Experience an ultra-long transmission distance of 10-20m (unobstructed) with a strong signal. ? Powered by the Taiwan Realtek 5.3 chip, the adapter fully adheres to Bluetooth 5.3 technical specifications, supporting low-power dual-mode transmission. The GAROGYI 5.3 Bluetooth adapter is a cutting-edge product renowned for its advanced version and high-speed performance. It boasts exceptional compatibility, stable high-speed connectivity, and an extended reception range. This adapter is compatible with popular operating systems like Windows 7, Windows 8.1, Windows 10, and the latest Windows 11. For Windows 8.1, 10, and 11, there is no need for driver installation. In certain cases, Windows 7 may require driver installation.