Warm and friendly reminder: If your computer does not have a CD-ROM that can be read the driver, you can download the Bluetooth driver through the GAROGYI web URL, and the driver content is the same as that in the CD. web URL:dropbox.com/s/3ktdqbq7egr50ee/Rtl5.3%20Driver.zip?dl=0. ? USB 2.0 interface (compatible with USB 3.0). ? Fully backward 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, intelligent sleep and wake functions for energy efficiency, 24-bit CRC (Cyclic Redundancy Check) for interference resistance, and adaptive frequency hopping to reduce interference. ? Original manufacturer driver management software: The REALTEK driver management software is user-friendly, feature-rich, and supports various application program extensions. ? More stable transmission rate: Provides a transmission rate of 3Mbps, enabling high-speed file and audio data transfer. ? Extended transmission range: The Class 1 protocol enables an impressively long transmission distance of up to 150 meters (under unobstructed conditions) while maintaining a robust signal. This enhanced range is further fortified by the inclusion of dual antennas, ensuring even greater stability and reliability of the signal. ? It adopts the Taiwan Realtek 5.3 chip, fully compliant with the Bluetooth 5.3 technical specifications, supporting dual-mode low-power transmission. For Windows 11, 10, and 8.1, it's a plug-and-play experience—no drivers needed. However, Windows 7 might require driver installation in specific cases. Each system varies; typically, it's plug-and-play. If your system doesn't automatically detect the adapter, manual driver installation can help.? A courteous reminder: If your computer lacks a CD-ROM for driver installation, you can get the Bluetooth driver via GAROGYI's web URL:dropbox.com/s/3ktdqbq7egr50ee/Rtl5.3%20Driver.zip?dl=0. The GAROGYI 5.3 Bluetooth adapter offers top-tier performance with strong compatibility across Windows 7, 8.1, 10, and Windows 11. It ensures fast and stable wireless connections between your computer and a variety of Bluetooth devices like headphones, speakers, mice, keyboards, game controllers, smartphones, printers and more — For audio, data, and image transfer. The adapter's dual antennas enhance signal stability and extend the range for an even better experience.